Two-way voice intercom communications technology automatic identification of processing speech signals during a call does not require any action;this model is 110 Voltage
Auto dual-way intercommunication without pressing any button;anti-interference and noise-free function
Two-way audio record output;dedicated anti-side tone processing chip with auto-mute function
Has special side tone processing chip and the movement noise function can effectively improve the noise
Anti-interference and noise-free function;spare record jack for the bank