Counter Window Dual Way Intercom System

Automatic dual-function intercom with one host, one hanging speaker & one mic. One party is talking and the other party is answering. MIC on/off.
The installation and operation are extremely simple and the quality is reliable. Best for Counters, Banks, Hospitals, Laboratories, Receptions etc Power Switch
Power supply: DC: 220/110V Volume control of the main frame
Working voltage: DC14V REC jack
Microphone sensitivity: -42±2dB MIC Jack
Host power: 5W+1W DC power port.
Working current: 600mA The Plug of Extension Connecting Line.
Frequency response: 80Hz-14KHz