The acoustic information transmission set is intended for controlling the acoustics of a room with information transmission via a 220 V network on auxiliary carriers.

The set has a digital channel switch.

The information transmitter is made in the form of an open frame module with an external microphone and wires for connection to a 220 V network, connected in parallel to a 220 V network.

The information receiver is made in a metal case. The front panel has connectors for connection to the 220 V mains, headphones, volume controls, which are also switches, tuning controls and a battery status indicator. The side panel contains connectors for microphone input on the tape recorder and external power supply, external power mode indicator.

The receiver has a built-in delta modulation decoder.

The receiver can be equipped with an external magnetic antenna, which allows the reception of audio information without a contact connection to the network directly near the network conductors, power electrical panels.