ADVISION AD-UPS-F, power supply for audio door, support max 16 flats
ADVISION AD-UPS-F provides the best source of power for acoustic doors, with high technology and modern phone system.
ADVISION AD-UPS-F 1pc Audio Door Power Supply can support a maximum of 16 apartments, without any problems or crises while saving energy during operation.
Intercom .. All you need to know about the modern device in 2021
intercom or intercom is a self-contained voice communication system for use within a building or a small group of buildings, operating independently of the public telephone network. Intercoms are usually permanently installed in buildings and vehicles. Intercoms can include connections to public address loudspeaker systems, walkie-talkies, telephones, and other intercom systems. Some intercom systems include control of devices such as signal lights and door latches.
Intercoms are used in a variety of properties, from homes that require only one communication between the occupant and the property entrance to multi-unit apartments that require the installation of intercoms in each individual apartment. Some of them are video-equipped, and their wires (electrical installation) can be connected outside with a few pairs (4-6 pairs) while controlling an electric shock. Recent generations are even compatible with computers, and some models include TCP/IP compatibility.
Conventional intercoms and public address systems consist entirely of analogue electronic components but many new features and communication options can be achieved with new intercom systems based on digital communications. Video signals as well as audio can be carried. Digital intercom stations can be connected using Cat 5 cable and can also use existing computer networks as a means of communication between remote parties. Intercom cameras can be used in modern offices and hotels.
Many schools and office buildings now use audio/video systems to identify visitors trying to reach an enclosed building, and they can be linked to the building’s access control system.
Besides fixed positions, intercom systems are used in many types of vehicles including trains, barges, aircraft, and armored fighting vehicles.
Portable intercoms are commonly used by special event production crews and professional sports teams. Performing arts venues such as theaters and concert halls often have a mix of permanently installed and portable intercom elements. Motorsports race tracks often have portable and permanent intercoms installed at critical points around the racetrack for use by race officials and emergency medical technicians.