Intercom "AA-1".

Everything else not included in the sectionsInterphone devicesIntercom "AA-1" was produced presumably since 1970. The device is intended for the organization of two-way communication between the dispatch center and subscribers or between subscribers. Since the device is connected to a common two-wire line, all subscribers hear the negotiations. The organization of a "round table" is possible. A special internal loudspeaker is built into the intercom. The "DEMSH" type microphone is attached to the magnet on the right side of the PU. The control panel is powered from a 220 V electrical network. Power consumption is 5 watts.