DOOR PHONE

Information about

Power: Standby 16V/ (key not enabled)

Audio: Audio

Answer: 300 - 3400Hz, ± 3dB/1000Hz

Harmonic revision: ≤ 5%

SNR Response Channel: ≥ 35dB

Call the primary SNR channel: ≥ 40dB

Audio output of response channel without editing power: ≥ 100mW

Invoke the sound of the main channel without editing: ≥ 5mW

Call tension: ≥ 70dB

Enter numbers: three, four digital pipes

Load capacity: 127-storey decoders

Wiring: decoder for three-stroke bus decoder, decoder for intercom extension for the second row of irregular