Video intercoms for an apartment with connection to an entrance intercom are a simple and cheap way to increase the safety of residents by visually identifying visitors. One of the options for installing these systems in an apartment building is to combine the device with an active intercom. To implement such an idea, you will have to get acquainted with the design features and switching capabilities of the entrance video intercom.
Varieties of intercoms for city apartments
The main indicator characterizing the functionality of intercom devices, the type of information about the visitor transmitted over the communication line. It is presented in an audio standard or video format. In the second case, the costs of organizing direct communication increase by 30-50 percent. There are also models that transmit an image without sound over an established channel.
Advanced and relatively expensive video transmitting devices are capable of forming a picture, saving a recording and transmitting a signal to mobile devices. Such opportunities allow you to communicate with the visitor when the user himself is not at home. Manufacturers produce various models of intercoms, differing in their configuration:
- Devices designed for one voice communication - the outdoor panel together with the handset.
- Video devices, consisting of a call panel with a handset and a monitor.
- An extended set of video intercoms: a door station with a camera plus a monitor with or without a handset.
All additional items are supplied separately or are included in the set of purchased equipment.
Selection of compatible devices
It is possible to choose the right intercom with video surveillance for the entrance, taking into account the compatibility of the two devices (existing and purchased). This will require:
- determine the type of equipment installed at the entrance (digital or coordinate);
- make sure that the technical parameters of the purchased and existing equipment are consistent;
- resolve the issue of installing an additional video camera;
- compare the external characteristics of the two models (color, size, case type, etc.).
When studying the functionality of various models, special attention is paid to their configuration: with a speaker or with a simple tube. The second option is somewhat cheaper, but takes up more space during installation. In addition, there are samples of video intercoms on the market with a cordless handset, a simple screen and a separate control panel.
Using the interface module
Before buying an interface module, it is important to figure out which intercom model is installed on the entrance door of the entrance. This data must be reported to the sales manager in the store. The matching device can be installed directly in the apartment or in the driveway electrical panel.
Most users prefer the first option, which eliminates the possibility of theft or destruction of an expensive device. It is best to mount the interface module within the apartment next to the front door. This is not critical, but convenient for its maintenance. In addition, money is saved, because no need to lay long cable runs.
Installing a video intercom in an apartment
Before installing a video intercom for an apartment with connection to an access device, you will need to do a number of preparatory operations. It is necessary to draw up a plan for the upcoming work, and then agree on it with representatives of the installation organization with the subsequent conclusion of a contract. The complex of the forthcoming works includes the following operations:
- Laying of connecting wires and power cables.
- Installation of basic and additional equipment.
- Connecting the intercom to the operating system.
- Test check of the quality of communication.
Installation should be started before finishing work is completed in the hallway near the entrance door. This procedure allows you to pre-install and connect the power supply, after which you can brick it up in the wall, hiding the lead wires in the same place.
Next, you need to decide on the location of the doorphone doorphone panel at the entrance to the entrance. It is installed at a height of 150-170 cm in an obstruction-free area and the following viewing angles are guaranteed:
- horizontally - 50-70 degrees;
- vertically - 70-90 degrees.
In the apartment, the communication panel is placed in any suitable place, which guarantees good audibility of the call from other rooms. As power and signal cables, copper wires of the VVG brand are used for the corresponding conductor cross-sections (0.75 and 1.25 mm2). Their total length when wiring along a marked route should not exceed 35-40 meters. An additional cable with a cross-section of 0.75 mm square is laid next to them. to control the e / m latch of the lock.
At the final stage of work, the opening mechanism itself is mounted.
All operating devices are connected according to the wiring diagram in the installation instructions for the system. If you have optional components, first make sure they are compatible with the equipment you have already installed.
Difficulties in connecting to an entrance intercom
- The place for the entrance door station is selected taking into account ease of use.
- When choosing cable products, it is not recommended to focus on low-current telephone wiring, which does not provide the required quality and reliability of connections.
- For laying the wiring, sections of building structures that are invisible to the prying eye are used, where they are pulled in a corrugated hose or in a steel pipe.
- When choosing a power supply scheme, the possibility of emergency opening of the door is provided, which guarantees access to the entrance in an unforeseen situation (in case of loss of keys, for example).
- The complexities of installation include the issue of lighting the site adjacent to the entrance, which is organized by LED strips. If it is insufficient, you will have to think about the issue of installing an additional lighting device and connecting power to it.
A serious problem is the need to arrange connections in old buildings. In these buildings, there may not be any suitable niches and natural channels for laying and assembling cables. In such conditions, the wiring plan is drawn up in advance, taking into account the existing possibilities of its laying (broaching).
Particular attention is paid to high-quality protection of cable lines from mechanical damage and deformation. In the presence of such a threat in old buildings, all wiring (including signal and additional) is laid in steel or rigid corrugated pipes.
