The subscriber handset or apartment intercom is an integral part of the intercom system. It is installed in each apartment of a residential building and allows you to communicate with the visitor and control the electronic lock to open the door. Connecting the intercom handset yourself, if necessary, is not at all difficult. You just need to know a few simple rules.

handset design

The subscriber apartment device consists of two parts. This is a handset and panel, which is usually mounted on the wall next to front door. The tube can be installed anywhere, only you need to lay a wire around the apartment. Inside the handset are a microphone, a speaker and a small board with discrete elements. There is a handset removal lever on the panel, and on the handset itself there is a door opening button.

The electronic lock button can also be located on the wall panel. AT modern models the lever is replaced by a reed switch, and there is a small magnet on the tube itself. On some models, a handset switch may be installed. On the back of the panel are two screws marked "+" and "-". A two-wire line is connected to them.

Connect the wires to the intercom handset in accordance with the polarity, otherwise the system will not work.

All access intercoms installed in entrances apartment buildings are divided into two groups:

• Coordinate
• Digital

Based on the types of intercoms, apartment tubes also have slight differences. In coordinate intercoms, the switch installed in the entrance is responsible for the apartment number, and in digital devices, a special microcircuit that is located on a circuit board inside the handset.

Possible malfunctions of apartment tubes

Apartment intercom device(UKP) is a completely reliable device that can last for many years, but, during operation, may arise.

The most common defects include the following:

• Mechanical damage to the tube
• When you pick up the handset, the call does not turn off the ringtone
• Lock button not working
• When the lock button is pressed, the call is dropped
• Poor hearing

The cost of a handset for an intercom starts from 270-300 rubles, therefore, with strong mechanical damage, it is easier to purchase a new device than to repair a broken or cracked case. When the call signal continues to sound when the handset is off-hook, there is no voice communication with the visitor and the electronic lock button does not work, this means that the off-hook switch is not working.

Many craftsmen repair it on their own, but if there is no appropriate tool and work experience, then it is better to invite a master.

If the electronic lock only works after a few clicks, then the microswitch is faulty. The door opening button can be located directly on the handset. In this case, the microswitch is soldered on printed circuit board. You can replace it yourself. It is necessary to alternately warm up the four contacts with a soldering iron while wringing out the case with a flat screwdriver. It is enough just to change the button located on the main panel.

Reason for dropping a call when you press the electronic lock button, there may be a break in the wire coming from the speaker. If any malfunctions occur, you should first check the reliability of all solders in the tube, and the connection of the line to the lamella on the back of the wall unit. Poor hearing may be due to a defective microphone or speaker, as well as contamination of the "Balance" trimmer on the handset board. This potentiometer is not available in all models, but if it is installed, you can, remembering the position of the engine, rotate it left and right. In many cases, normal hearing is restored.

Intercom handset replacement

When installing an intercom on the entrance door of the entrance apartment building, all work is carried out by the masters of the respective organization. They also install residential intercoms.

That's why self-replacement Intercom handset comes down to a few simple steps:

• Purchasing a new handset
• Installing it to replace the old one
• Connecting two wires

Before buying a new handset, you should find out the type of intercom. Models designed for coordinate and digital intercoms have design difference. The sales assistant will always tell you which subscriber handset is suitable for a particular intercom model.

If you plan to transfer the tube to another place, then the main thing is to observe the polarity when connecting. Only two wires are suitable for any subscriber device model, which are fixed with screws on the back side of the main panel.

If replacing the handset for a coordinate intercom requires only connecting wires, then installing a handset for a digital intercom includes dialing the apartment number. The body of the tube should be carefully opened. On the board, there are pins in a row numbered as 1-2-4-8 and so on. With the help of jumpers (jumpers), it is necessary to close the pairs of pins in such a way that the sum of the dialed digits is equal to the apartment number. So for apartment number 7, the first three pairs of pins should be closed.

Conclusion

Self-replacement of the intercom handset is quite possible even for a non-specialist. The main thing is to choose the right model for replacement and not to confuse the polarity of the connection.

Today, the issue of protecting your own home from unwanted penetration by strangers is of high relevance.

For this purpose, many different electronic and mechanical devices have been developed that protect the entrance to the building from uninvited guests.

One of the most efficient systems access to facilities are intercoms. They gained wide popularity among users as a device that is easy to operate, highly reliable and durable.

In most cases, intercom systems are installed by special companies that specialize in the sale and installation of access systems to residential or industrial facilities.

But there are times when you can service the intercom on your own. For example, when you need to connect an intercom handset - this procedure is not complicated and can be implemented by an ordinary user. How to connect the intercom handset Visit and will be described below.

Intercom handset device Visit

The intercom system includes two main nodes - a ringing device, which is located on the front door and a subscriber module, which provides communication between the owner of the house or apartment and the guest.

To use the subscriber device and maintain audio communication, an intercom handset is used. It is a device with the help of which the following functions are implemented:

• sound call of the owner of the apartment;
• support for duplex communication between the owner of the apartment and the visitor;
• control of the button for opening the electromechanical lock of the entrance door;
• call volume control.

Handset for intercom Vizit is a device with simple structure, high reliability and long service life. operational period. This device includes the following items:

• tube body;
• button to switch the call volume;
• button to open the lock;
• speaker and microphone;
• electronic control board;
• tube holder.

Visit tube connection diagram

Despite the fact that intercom communication devices are highly reliable, it happens that they fail for one reason or another.

In order to independently replace the handset, having a Visit intercom, the handset connection scheme will be as follows.

1. Initially, the apartment intercom is connected to the line of the intercom system. It is important to observe polarity when connecting the patch cable.
2. After that, the tube holder is fixed to the wall or other vertical plane using the mounting screws that come with the tube kit.
3. Then you can connect the device itself to its holder - for this, the patch cable included in the kit is used. It connects the pipe to its holder.
4. You can adjust the ringtone level with the volume setting switch.
5. The button to open the electromechanical lock will be used to open the front door to let the guest into the house.

Possible breakdowns of the intercom handset Visit

In the process of using an intercom device, various things can happen, most of which can be eliminated on your own. The main breakdowns that are most common in intercom handsets include:

• the button for opening the electromechanical lock of the front door does not function;
• there is no audibility of one of the parties to the negotiations;
• the tongue of the speaking tube sinks;
• there is a break in the cable connecting the handset with its electronic unit located inside the holder.

As you can see, during operation, various breakdowns of the voice tube can occur, which are quite easy to fix on your own.

If a Visit intercom is installed on the door, and the handset does not open the door, it is most likely that the front door opening button has broken.

This failure may be due to the failure of a special microelectronic switch located on the pipe's electronic board.

In this case, you must either replace this switch, or purchase a new intercom and install it instead of the old one.

If in the process of duplex communication one of the parties to the negotiations is hard to hear or not heard at all, then most likely the speaker or the microphone of the handset is out of order.

To replace these elements yourself, you need to select a similar speaker / microphone with the same performance characteristics that were originally in the handset. If it is difficult to do this on your own, then it is best to purchase a ready-made tube and install it in place of the broken device.

In the event that the tongue of the tube sinks, the problem can be easily solved by disassembling the device holder block and bending the corresponding plastic button holder, preheating it with a soldering iron or other heating device.

When a break is found in a patch cable, it is easy to replace it by purchasing a new cable with the appropriate connectors.

In order for the Visit intercom handset to work correctly, the instruction warns of the importance of observing the polarity of connecting the device. If the polarity is not observed, then the entire system of the Visit intercom system may malfunction.

Conclusion

Intercoms Visit are highly reliable devices that function well in different operating conditions and are highly resilient.

If, using the Visit intercom, the malfunction of the handset could not be avoided, then you can try to fix it yourself using the recommendations listed above. When a person is not sure that he can fix the tube on his own, you can turn to specialists who carry out Maintenance intercom systems.

Qualified craftsmen will inspect the broken device and decide whether the tube can be repaired or should be replaced with a new device.

Considering that the price of the tube is not that high, in most cases, if the breakdown is serious enough, it is recommended to install a new device that will last long term, and will not cause inconvenience to the user in using the intercom system.

The intercom refers to access control and management systems, it is installed on the entrances of apartment buildings and helps protect housing, its owners and property from unwanted visitors. However, not all residents of an apartment building may agree to the purchase, installation of subscriber devices in apartments, as well as the maintenance electronic system because it is a very costly business. But after installing the intercom handset in the apartment, an understanding comes in the convenience of the intercom system, its necessity and ease of use.

Which intercom to choose

On the Russian market There are many companies that manufacture intercom devices. High production technologies allow to produce improved models every year. What will be the intercom in the house - it's up to the owners to decide.

When choosing an intercom, you should pay attention to the switching system. According to this parameter, coordinate and digital intercoms are distinguished. Their difference lies in the wire, thanks to which there is a connection to the apartments.

When installing a digital intercom, one line is laid to connect the switch to all apartments. The coordinate system is designed in such a way that a separate wire will be laid to each apartment, connecting it to the switch.

Today, digital intercoms are considered more reliable in operation. But their price exceeds the price of coordinate three times.

Another of the characteristics that you should pay attention to is the type of connection. There are audio and video intercoms. Their difference is in the presence of a display on which you can see who is calling. Video intercom provides high security, thanks to him, no one from outsiders can get inside the entrance. But the cost of such devices is high. For the most part, apartment owners prefer audio intercoms.

Who pays for intercom service

From the moment of installation, the intercom acquires the status of common house property and belongs to all apartment owners in the house. According to the current legislation, the tenants themselves pay for the maintenance and service of the property. After the appearance of the intercom at the entrance to your mailbox a new receipt will appear.

The obligation to pay amounts for the maintenance of this device is assigned to those owners who did not install tubes in their apartments.

Previously, people did not think that someone could enter their entrance and cause damage to the property that is in it. AT Soviet time and there were wooden entrance doors at all, and flowers in pots bloomed on the landings.

Perhaps the dashing 90s, when the morality of the people wished for the best, became the reason for the vandalism of the entrances. That's when they began to invent and install various means protection from ill-wishers. At first, these were combination locks installed by the housing and communal services, after which they were replaced by intercoms. Let's see what else will be invented to protect common house property.

Types of modern intercoms and their features

For reliable identification of visitors, an audio or video intercom is used. The latter is more often installed in private cottages and was created for additional visual control of the space in front of the front door.

As for urban apartments in high-rise buildings, then they often install an audio version, the design of which includes the following elements:
1. A handset that is equipped with buttons for accepting a call and opening an input electromagnetic or electromechanical lock. The device is installed by a company providing intercom installation and maintenance services. If such devices were not installed when equipping the entrance in some apartments, there is a possibility of their self-assembly. You can also use the services of a specialist service company.
2. Call panel equipped with a dial pad with numbers, which allows the visitor to signal the intercom handset by pressing the required code, usually the apartment number. In addition, there is a reader on the panel, with which you can use a special key to open an electromagnetic lock blocking the entrance doors.
3. Locking device with power supply. The most common type of lock today is electromagnetic. Until recently, electromechanical latches equipped with sliding mechanisms were found everywhere. Such devices are often present in the entrances of apartment buildings even now. To operate the remote-controlled unit, you must use a constant voltage of 12 or 24 V.
4. Switch. This device is designed to transmit a signal from the call panel to the subscriber handset of a particular apartment.

Depending on the type of signal processing, digital and analog intercoms are distinguished. Receiving devices are used for digital and analog models various types. Before purchasing such a device, you should definitely find out what type is installed in the entrance.

There are two types of intercoms that can be successfully used both in a private house and in an apartment building: digital and coordinate matrix. Both types show high reliability, but their connection is somewhat different.

Digital

The operation of this device is as follows:
1. The alarm bell is transmitted by a two-wire line system.
2. It determines the number of the desired apartment.
3. In this option, jumpers are used that transmit a signal to a specific subscriber over a twisted grid.

The handset in each apartment has microchips. It is possible to connect to such a controller both the entire staircase and only one floor.

To connect devices of this type, only a cable with two cores is used, through which an encoded signal is transmitted. The handset installed in the apartment, the number of which was dialed on the call panel, responds to the signal.

To set the correspondence between the dialed code and the handset, special jumpers are used - jumpers - which bridge the necessary contacts in the response device. To correctly program the handset, the jumpers are placed between the numbered terminals so that the sum of the digits is equal to the apartment number.

The advantages of such intercoms include ease of installation and connection of new subscribers. The main disadvantage of such equipment is the influence of each tube on the operation of the entire system. When replacing a device, which is carried out due to its breakdown, as well as when connecting new subscribers, it is extremely important correct installation jumpers.

If an error occurs when connecting the digital handset or short circuit in the supply wires, the system may malfunction.

Currently, to partially eliminate this drawback, floor controllers are used, which allow localizing a malfunction within one level.

Another disadvantage of digital intercoms is their relative high cost, which does not allow these devices to be widely used.

analog

A feature of these intercoms is the relative ease of installation. A switch is connected to the coordinate communication device. It is this element that switches the call to a specific handset.

This device is connected to each apartment using two cables. Their numbers are not repeated. Communication is established by sending a signal to the switch. The modulator then processes the received signal and connects to the right cable. Further, thanks to the relay, there is a connection with the apartment.

Most often applied parallel connection. This makes the job much easier if you decide to install an intercom with your own hands. The main thing to remember is the polarity of the call panel, tubes in the apartments and the electric lock.

If you make the connection incorrectly, then the work of not only a certain branch, but also the system as a whole will be disrupted.

Analog installations use a coordinate matrix connection and work on the principle of a telephone exchange. Optional element such a system is a switch, which processes and analyzes the signal, as well as redirecting it to a specific subscriber.

Two buses are used to connect the intercom handset to the switch. Contacts of the first of them (D0–D9) correspond to tens, and the second (E0–E9) to units.

Thus, in order to connect an intercom to an apartment, the number of which, for example, is 74, you need:
• connect the conductor from the positive terminal of the subscriber tube to the contact corresponding to the number 7 on the tens bus;
• the conductor adjacent to the negative terminal - to the contact corresponding to the number 4 on the unit bus.

In the considered connection option, a device designed to serve up to 100 subscribers was used. There are models that can work with a large number of numbers, but their principle of operation is no different from that discussed above.

If the numbers of the apartments located in the entrance do not allow connection, the installer reprograms the control panel with the numbers shifted by a certain number (for example, 84 must be subtracted from each). In this case, there is some difficulty in connecting, since without consulting a specialist who installed the intercom in the entrance, it is difficult to find out the amount of offset.

The sequence of actions will be as follows:
1. At the first stage of work, the location of the intercom handset is selected, then it is fixed on the wall using quick installation.
2. Next, the installation location of the switch is determined (for analog intercoms). On each floor, they are installed in a junction box for low-current circuits. All of them are connected in parallel, which greatly simplifies the installation process. In the general case, only one switch per entrance is enough, however, when using such a scheme, it is necessary to stretch wires from the apartments of the upper floors to the installation site of the device.
3. After removing the protective cover of the switch, the terminals corresponding to tens and ones are determined, then the connection is made, so that the sum of the numbers of these contacts shows serial number apartments.
4. Wires are connected to the tube. It is extremely important to respect the polarity. The positive terminal is connected to the contact of the switch corresponding to tens, the negative terminal - to units.

If the polarity is not observed during the connection of the device of the coordinate matrix system, the operation of the devices of the entire entrance may be disrupted.

The subscriber apartment device consists of two parts. This is a handset and a panel that is usually mounted on the wall next to the front door. The tube can be installed anywhere, only you need to lay a wire around the apartment. Inside the handset are a microphone, a speaker and a small board with discrete elements. There is a handset removal lever on the panel, and on the handset itself there is a door opening button.

The electronic lock button can also be located on the wall panel. In modern models, the lever is replaced by a reed switch, and there is a small magnet on the tube itself. On some models, a handset switch may be installed. On the back of the panel are two screws marked "+" and "-". A two-wire line is connected to them.

Connect the wires to the intercom handset in accordance with the polarity, otherwise it will not be possible to use the intercom system - it will not work.

All access intercoms installed in the entrances of apartment buildings are divided into two groups:
• coordinate;
• digital.

Based on the types of intercoms, apartment tubes also have slight differences. In coordinate intercoms, the switch installed in the entrance is responsible for the apartment number, and in digital devices, a special microcircuit, which is located on the board inside the handset.

Installing an intercom in an apartment

Sooner or later, each of us will face the problem of connecting the handset.

If you still have to do this work yourself, then first of all you should purchase completely new equipment. AT this case take into account the fact that the handset must fully comply with the installed intercom system.

To date, buying a handset for an intercom is not difficult, and you can safely buy it yourself. Thanks to the many modern companies involved in this production, there is a wide range of products that are publicly available and suitable for any type of intercom.

It is strongly recommended to purchase goods only from authorized dealers, who guarantee the quality of the goods and provide a guarantee for a long service life. The device must meet all the quality conditions set, since only high-quality intercom handsets can ensure uninterrupted and reliable operation of the protection system. Otherwise, re-installation will not keep you waiting.

Installation of tubes for digital intercoms

Digital intercom systems are mainly applied in apartment buildings. Installing a handset of this type has its own specifics, namely: such an addressing scheme requires a two-core cable to which a subscriber handset is attached. Here you should pay attention to the polarity.

Each intercom handset has its own microcircuit, which is programmed with jumpers or jumpers for each apartment number. In this regard, in order to find out the number of your apartment, you will have to carefully disassemble the handset and carefully examine the existing microcircuit. Near each jumper there is a special digital panel, on which the numbers are in ascending order.

Here the apartment code is made up of numbers related to closed jumpers. A disassembled old pipe can serve as an example from which you can transfer the code to a new device. Thus, the installation of a new intercom handset will not be difficult.

Mounting the handset on a coordinate matrix type intercom

Connect the intercom handset yourself to given type won't be difficult. Here, all the work consists in transmitting a signal to a special switch, which, upon receiving a call, processes it, and, due to the presence of special keys, sends a call signal to the required subscriber device. Installing a handset for such an intercom will make the owner not only work hard, but also be smart.

During installation, the whole problem lies in the cable, which is divided into many wires related to each individual apartment in the entrance. It should also be taken into account here that the tens keys generally do not exceed seven, including zero. Thus, the total number of users can be more than eighty.

Do-it-yourself installation of an intercom handset consists in finding the right tire for dozens, as well as units. It is very easy to deal with dozens - they are located on the shield of the required floor. All that is required is to find the wire to which the wires related to each apartment in the entrance are connected. This way you will select the cable you need.

In order to choose the right unit bus, you need to go up to the floor with the apartment number that matches the last digit of your apartment, and again find the cable on the shield. A plus is connected to the tens bus, and a minus is connected to the ones bus. This is where all the difficulties end.

Installation and connection of an intercom with an electromagnetic lock

Electromagnetic locks differ in the method of landing on the door leaf.

There are schemes:
1. installation in a cutout with overlays of strong parts of the body on the surface of the sash;
2. installation in the inner cavity of the door with the obligatory output of the magnetic platform flush with the surface.

The first installation option requires less carpentry skills, but can be difficult to work with. metal door. The second one is more accurate, it will require professional skills to create a recess in wooden door. To fix the lock, self-tapping screws and another type of collapsible connection are used. Welding the locking mechanism to the door is highly discouraged.

Call panel installation

Where exactly to place the intercom door panel depends on the wishes of the owner. In this case, one should be guided by elementary common sense: to press the call button or place a face in the capture area of ​​the video camera, the visitor does not need to require any special actions.

The call panel is placed so that all its parts (except the front) are closed to prevent accidental or intentional damage, protected from moisture. For connection, it is worth laying cables in advance. Their connection is carried out according to the instructions for the device.

Typical color markings look like this:
• red cable or terminal - for internal buzzer;
• brown - to control the lock;
• red - for positive power cable;
• green - to the internal light signal;
• yellow is connected to the manual release button (from inside the security zone);
• orange is connected to the door closing sensor (if used);
• white - to the contact device of the key.

The black wire is a single marking of a common contact for all devices in the system, it is connected to the power minus line. If it is not possible to pre-lay the cable structure in the fence, ground, metal structures it is recommended to place it in a metal or corrugated pipe; durable aluminum cable channels are also suitable.

The diagram of the intercom door panel is always given in the technical data sheet, the purpose, marking of the terminal comb or outlet contact lines of the device are also indicated there.

Wiring diagram for an intercom with an electromechanical lock

On the electromagnetic lock brought from the store, there may be different number contacts.

In general, if the manufacturer uses standardized markings, the colors of the terminals or taps correspond to:
1. green - main manager, release;
2. black - zero wire for status control;
3. blue, yellow - transmit a signal of the state of fixation or release, respectively.

The intercom does not apply a detailed monitoring system, it only manages the release. Therefore, the lock is connected with only two contacts: in standard case green (to the control point of the call panel) and red (to the positive terminal of the power supply of the corresponding voltage). All the necessary technical data is always given by the manufacturer in the passport to the product.

How to connect a video intercom to an access intercom

To coordinate the video intercom with the access intercom, special elements are used - MSC / MSC interface modules. These devices are used to coordinate a video intercom with a digital / coordinate access intercom. The adapter is capable of supporting video intercoms from various manufacturers, the manufacturer promises quality work with CTV, Commax and Kocom. There are limitations described in the instructions for the device.

We connect to a digital access intercom

Installing the MSC adapter is quite simple. You connect the wires that used to go to the intercom handset. Four wires from the video intercom also lead to the adapter.

The call panel is already connected directly to the adapter, like the camera. To do this, the device provides appropriate outputs.

The MSC module provides all the basic functions of working with an intercom:
1. Organization of two-way audio communication with the visitor.
2. Opening the lock on command from the video intercom.

The connection diagram looks like this:

We connect to the coordinate access intercom

The MSK module is needed to work with a coordinate access intercom. Connection and operation is similar to the MSC adapter described above.

The connection diagram using MSC looks like this:

Intercom Commax: installation instructions, connection diagram

Commax intercoms differ in screen diagonal, connection type, control method, etc. Some models can divide the screen into four parts. This is convenient if you want to view images from four cameras at the same time. The user can choose a color or black and white intercom, with the function of "hands free" and other types of modifications.

If we talk about the memory of the device, then, as a rule, it is enough to make up to 128 frames. Some models of Commax intercoms can record short videos. Shooting starts after the user presses a key, so do not confuse a video intercom with video surveillance.

A more comfortable solution is the ability to connect a cordless handset. Thus, the signal passes not only to the intercom, but also to the handset itself, which is very convenient if the apartment is large and the call cannot always be heard. The presence of such a handset allows you to use it not only as a means of communication with the intercom system, but also as a telephone, for which it is enough to connect to the network of the telecom operator.

Wiring diagram

The Commax intercom connection diagram includes several elements. These include: calling panels, a controller, an electric lock, a 12 V power supply and video cameras. The principle of connection is quite simple.

The call panel and the camera are connected to the controller using four wires: audio, video, power and common. Voltage is applied to the input of the call panel and to the input of the video camera direct current 12 V. This is the transformed value obtained as a result of the transformation of the household AC voltage of 220 V by the power supply.

The system provides for the use of two electric locks, but the user can leave only one or exclude them from the scheme altogether. If it is decided not to install locks, then the wires must be insulated and hidden under the panel.

In the case when a video camera is used instead of the second calling panel, the sound is transported through one channel, and only the image through the second. Most often, the video camera is installed directly in front of the entrance to the apartment, and the call panel in front of the entrance to long corridor, passing which, the visitor enters the frame of the lens.

In some cases, two intercoms are connected. This is convenient if the house is large and one post is not enough, then one, for example, is installed on the first floor, and the other on the second.

Connection

The Commax intercom is connected using colored wires. As a rule, this is a red, blue, yellow and white wire. It is important to maintain the connection order, as an incorrect connection can cause equipment failure. In some cases, repair is not possible, the user has to purchase equipment again.

When connecting the equipment, it must be taken into account that direct Sun rays. Excessive heat is the main cause of failure. It is better to place the elements at a height of one and a half meters, if there are children in the family, they will not be able to reach them.

If connecting wires are laid near high voltage lines, then a coaxial cable must be used, which is protected metal pipe. The only way magnetic fields will not create pickup currents - and this can be one of the reasons for a false signal. The pipe, in turn, will reliably protect the connecting wires from external influences.

It is necessary to monitor the integrity of the wiring, as a violation of the insulation leads to a short circuit, which can cause a fire. After all the elements are connected, the correctness of the connection is checked again. It is important that the conductors are securely fixed, and the order of the wires is not disturbed.

When connecting a monitor and a camera, make sure that the monitor is not connected to the network. Power is supplied only when the power cord is connected to. At the end, the specialist turns on the devices and makes a control check of the operability of all elements.

The operating instructions for the “Visit” intercom must indicate precautions. It must be remembered that the voltage in the device does not exceed 18 V. It is strictly forbidden to carry out maintenance and repair of the equipment with the power on.

Repair work or routine maintenance must be carried out by a specialized service organization. The instructions also describe the installation procedure. Before performing installation work, it is imperative to study it, as well as the connection diagram of intercom equipment blocks.

The instruction contains a graphic representation of the installation process of the device. Direct contact with snow or rain on the external call unit is not allowed. It is forbidden to use electromagnetic locks with a resistance below 10 ohms and above 20 ohms.

The instruction manual necessarily includes a description of the technical parameters of the intercom device:
1. power supply voltage;
2. power consumption;
3. dimensions of the calling unit (dimensions);
4. block mass;
5. operating conditions (minimum and maximum temperature air, relative humidity).

If a video intercom is installed, then the camera parameters must be specified.

The presence of an intercom has long been an indispensable condition for ensuring comfort modern apartment. The main purpose of these devices is to enable homeowners to receive calls from visitors and open doors remotely. Intercoms have proven to be much more convenient than outdated combination locks. Let's find out how to connect the handset of the apartment intercom on your own.

Types of modern intercoms

For reliable identification of visitors, an audio or video intercom is used. The latter is more often installed in private cottages and was created for additional visual control of the space in front of the front door. As for urban apartments in high-rise buildings, they often install an audio option, the design of which includes the following elements:

• A handset that is equipped with buttons for accepting a call and opening an input electromagnetic or electromechanical lock. The device is installed by a company providing intercom installation and maintenance services. If such devices were not installed during the equipment of the entrance in some apartments, it is possible to install them yourself. You can also use the services of a specialist service company.

• Call panel equipped with a dial pad with numbers, which allows the visitor to signal the intercom handset by pressing the required code, usually the apartment number. In addition, there is a reader on the panel, with which you can use a special key to open an electromagnetic lock blocking the entrance doors.

• Locking device with power supply. The most common type of lock today is electromagnetic. Until recently, electromechanical latches equipped with sliding mechanisms were found everywhere. Such devices are often present in the entrances of apartment buildings even now. To operate the remote-controlled unit, you must use a constant voltage of 12 or 24 V.

• Switch. This device is designed to transmit a signal from the call panel to the subscriber handset of a particular apartment.

Depending on the type of signal processing, digital and analog intercoms are distinguished.

Important! Different types of receivers are used for digital and analog models. Before purchasing such a device, you should definitely find out what type is installed in the entrance.

Digital intercom

To connect devices of this type, only a cable with two cores is used, through which an encoded signal is transmitted. The handset installed in the apartment, the number of which was dialed on the call panel, responds to the signal. To set the correspondence between the dialed code and the handset, special jumpers are used - jumpers - which bridge the necessary contacts in the response device.

To correctly program the handset, the jumpers are placed between the numbered terminals so that the sum of the digits is equal to the apartment number.

The advantages of such intercoms include ease of installation and connection of new subscribers.

The main disadvantage of such equipment is the influence of each tube on the operation of the entire system. When replacing a device, which is carried out due to its breakdown, as well as when connecting new subscribers, the correct installation of jumpers is extremely important.

Attention! In the event of a digital tube connection error or a short circuit in the lead wires, the system may malfunction.

Currently, to partially eliminate this drawback, floor controllers are used, which allow localizing a malfunction within one level.

Another disadvantage of digital intercoms is their relative high cost, which does not allow these devices to be widely used.

Analog installations use a coordinate matrix connection and work on the principle of a telephone exchange. An additional element of such a system is a switch, which processes and analyzes the signal, as well as redirects it to a specific subscriber.

Two buses are used to connect the intercom handset to the switch. Contacts of the first of them (D0–D9) correspond to tens, and the second (E0–E9) to units. Thus, in order to connect an intercom to an apartment, the number of which, for example, is 74, you need:

• connect the conductor from the positive terminal of the subscriber tube to the contact corresponding to the number 7 on the tens bus;
• the conductor adjacent to the negative terminal - to the contact corresponding to the number 4 on the unit bus.

In the considered connection option, a device designed to serve up to 100 subscribers was used. There are models that can work with a large number of numbers, but their principle of operation is no different from that discussed above.

Connection order

The sequence of actions will be as follows:

1. At the first stage of work, the location of the intercom handset is selected, then it is fixed on the wall using quick installation.
2. Next, the installation location of the switch is determined (for analog intercoms). On each floor, they are installed in a junction box for low-current circuits. All of them are connected in parallel, which greatly simplifies the installation process. In the general case, only one switch per entrance is enough, however, when using such a scheme, it is necessary to stretch wires from the apartments of the upper floors to the installation site of the device.
3. After removing the protective cover of the switch, the terminals corresponding to tens and ones are determined, then the connection is made, so that the sum of the numbers of these contacts shows the serial number of the apartment.
4. Wires are connected to the tube. It is extremely important to respect the polarity. The positive terminal is connected to the contact of the switch corresponding to tens, the negative terminal - to units.

Important! If the polarity is not observed during the connection of the device of the coordinate matrix system, the operation of the devices of the entire entrance may be disrupted.

Thus, the installation of an intercom handset is not particularly difficult. However, before you start doing such work with your own hands, it is important to determine the type and brand of the device used, as well as the location of the switch and the connection diagram of subscribers.

We have all heard the expression: “My house is my fortress!”. It is not surprising that in every house an access intercom is installed and safe door. But even in a fortress, not everything is reliable, and, at one not-so-great moment, the intercom handset stops working. In such a situation, as a rule, there is no need to replace the intercom (the price is different). In 9 out of 10 cases, the problem is fixed with a repair.

An energy-intensive (and free) solution for such a situation is to constantly call expected visitors by phone, and then go down to the entrance door to manually open it. But the simplest and convenient option- just repair the intercom handset in order to comfortably manage access.

Why intercom tubes break

Exist different reasons, by which the intercom handset fails:

1. From old age. In old houses, the installation of an intercom and the installation of an intercom handset in an apartment (the price of equipment and installation was high) was carried out in the 2000s. Over the decades, the equipment has become obsolete and has repeatedly exceeded its service life.
2. Physical impact (shock or moisture). Although intercom handsets are made in a durable case, there are situations when they still break. For example, when moving into the house, they brought furniture and accidentally hit the intercom handset with a heavy sofa, or maybe water got inside the handset and closed all the contacts. Over the years, we have faced various situations.
3. Incompetent fitters. It also happens that the neighbors had a poor-quality installation of an intercom in the apartment (the price for the neighbors was minimal), and your equipment failed.
4. Manufacturing defects. Sometimes the handset stops working for no apparent reason. And the thing is that the factory soldered poorly or got garbage, which eventually closed the circuits of the board.

Intercom handset installationin the apartment price

Before proceeding to installation work, it is necessary to understand the type of equipment used. Intercom handsets differ from each other circuit diagram connections. On the this moment there are two such schemes:

1. Digital. Progressive connection scheme, in which all intercom handsets are connected to one low-voltage line (5-8 V). Each handset is assigned a specific address (code). A specialist installer (adjuster) sets the jumpers of the central board to a certain position.

The complexity of this method lies in the fact that there is no single programming standard and each manufacturer implements it differently. This requires extensive knowledge of working with equipment from different manufacturers. If the intercom is incorrectly configured and installed in the house, the price of such an error is the inability of all residents of the entrance to use the intercom.

1. Coordinate. Classic connection model. In it, each tube has a separate pair of wires leading to the switch (this device connects various lines, depending on the called party). The use of a switch imposes restrictions on the number of subscribers, there cannot be more than 99.

In such a scheme, it is extremely important to make the correct connection and configuration. Errors will lead to the complete inoperability of the intercom. For correct connection the installer must connect the wires to the tube according to the polarity. Both schemes are popular. Installation of an intercom (the price in both cases is approximately the same) is carried out in as soon as possible. Let's return to the problem of a non-working intercom handset. Before throwing away the old tube and replacing it with a new one, it is wise to find out if it can be repaired. This will be beneficial, because repairing an old tube is cheaper than buying a new one. However, you should not worry about the costs if you need to replace the intercom handset in the apartment, the price, as a rule, does not exceed 1500 rubles.

The simplest and effective solution if the intercom breaks down, you will contact our company, because we do it best of all.

Installation of an intercom handset - 1150 rubles.

Warranty for installation and equipment - 3 years*
*applies to equipment purchased from our company

Our advantages

There are many companies on the market ready to repair your equipment, but here's why you should choose us:

• A team of highly qualified craftsmen with over 15 years of experience;
• Free consultation;
• Quick check out;
• Minimum prices;
• We don't make mistakes;
• We use exclusively quality tools and do the work at record speed;
• We give a guarantee for our services;
• We leave no rubbish or dirt behind.

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