Main functions:
Mainframe:
1) Adopts 4-digit coding technology
2) Can save 10 groups of call-in numbers, can check and call back
3) 2-way calling and intercom, also can display other side images
4) With group calling function
5) With a connector which can connect alarm light or siren
6) Also can connect record and video recording equipment
7) Connected by 3-core BUS wire and 2pcs of video wires
8) Can install software in order to manage the calling information
Extension:
1) With 2-way calling, video and intercom functions
2) With "Ding-Dong" reminding ring while calling
3) With output connector, video single can be sent to AV equipment
4) Infrared built-in, can provide a clear picture even in nighttime
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