Video on-door speakerphones for an apartment with an access to the intercom system 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 existing intercom. To implement such an idea, you will have to familiarize yourself with the design features and the switching capabilities of the access video intercom.
Varieties of intercoms for urban apartments
The main indicator characterizing the functionality of intercom devices, the type of visitor information transmitted over the communication line. It is presented in a sound standard or in a video signal format. In the second case, the costs of organizing direct communications increase by 30-50 percent. There are also models that transmit through an established channel image without sound.
Advanced and relatively expensive video transmitting devices are able to form a picture, save a recording and transmit 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, characterized by their complete set:
- Devices designed for one voice connection - the calling panel together with the handset.
- Video devices consisting of a door station with a handset and a monitor.
- An expanded set of video intercoms: a call panel with a camera plus a monitor with or without a handset.
All additional items are delivered separately or are included in the kit of the 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 two devices (existing and purchased). This will require:
- determine the type of equipment installed in the entrance (digital or coordinate);
- make sure that the technical parameters of the purchased and existing equipment are consistent;
- solve the problem of installing an additional video camera;
- Compare the external characteristics of the two models (color, size, type of case, etc.).
When studying the functionality of various models, special attention is paid to their configuration: with a speaker or with a simple handset. The second option is somewhat cheaper, but it takes up more space during installation. In addition, samples of video intercoms with a cordless handset, a simple screen and a separate control panel are presented on the market.
Using the pairing module
Before buying a pairing module, it is important to understand which model of the doorphone is installed on the entrance door of the entrance. These data must be reported to the sales manager in the store. You can install the matching device directly in the apartment or in the access electrical panel.
Most users prefer the first option, eliminating the possibility of theft or destruction of an expensive device. Within the apartment, the interface module is best mounted next to the front door. This is not critical, but convenient for its maintenance. In addition, money is saved because no long cable runs required.
Installation of video intercom in the apartment
Before installing a video intercom for an apartment with a connection to the driveway, a number of preparatory operations will be required.It is necessary to draw up a plan for future work, and then coordinate it with representatives of the installation organization with the subsequent conclusion of the contract. The composition of the upcoming work includes the following operations:
- Laying connecting wires and power cables.
- Installation of basic and additional equipment.
- Connecting the intercom to an existing system.
- Testing the quality of communication.
Installation should begin before finishing work is completed in the hallway in the area of the front door. This order allows you to pre-install and connect the power supply, after which you can walled it up in the wall, hiding the lead wires there.
Next, you need to determine the location of the door station of the intercom at the entrance to the entrance. It is installed at a height of 150-170 cm in an area where there are no barriers and the following viewing angles are guaranteed:
- horizontally - 50-70 degrees;
- vertically - 70-90 degrees.
In the apartment, the communication panel is located in any suitable place, guaranteeing good call audibility from other rooms. As power and signal cables, copper wires of the VVG brand are used for the corresponding cross-sections of the conductors (0.75 and 1.25 mm square). Their total length when wiring along a marked track 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 electric shutter latch.
At the final stage of work, the opening mechanism itself is mounted.
All operating devices are connected in accordance with the electrical diagram contained in the installation instructions for the system. If there are components not included in the kit, first make sure that they are compatible with already installed equipment.
Difficulties in connecting to the intercom
Before installing and connecting the access doorphone with a camera to the existing equipment, you will need to familiarize yourself with the following subtleties of these procedures:
- The place for the entrance call panel is selected taking into account ease of use.
- When choosing cable products, it is not recommended to focus on low-current telephone wiring that does not provide the required quality and reliability of connections.
- For wiring, sections of building structures that are invisible to the prying eye are used, where they extend in a corrugated hose or in a steel pipe.
- When choosing a power supply, it is possible to emergencyly open the door, which guarantees access to the staircase in an unforeseen situation (if keys are lost, for example).
- The difficulties of installation include the issue of lighting adjacent to the entrance of the site, which is organized by LED tapes. In case of its insufficiency, it will be necessary to consider the question of installing an additional lighting device and supplying power to it.
A serious problem is the need to make connections in the houses of the old buildings. In these buildings, suitable niches and natural channels for laying and assembling cables may not be at all. In such conditions, the wiring plan is prepared in advance taking into account the existing possibilities of its installation (broaching).
Particular attention is paid to the quality protection of cable lines from mechanical damage and deformation. If there is such a threat in old buildings, all wiring (including signal and additional) is laid in steel or rigid corrugated pipes.
