Features:

● Call any household extension to achieve two-way conversation

● Receive any extension call and display the caller ID

● LCD display, easy and fast operation

● Can unlock the door host and the wall machine

● Can receive alarm information of each household extension

● Can record alarm information and query alarm records at any time

technical parameter:

● call time limit - 90 seconds

● Display - LCD Chinese display

● Working voltage - DC12V ± 10%,

● Environmental humidity - 45% to 95%

● Ambient temperature - +55% ~ -10%

● Frequency response - 400 ~ 3400KHz ± 3dB

● Working current - ≤400Ma

● Dimensions: 360*217