HandsfreeConnection: 1 of two-core wire (no polarity)Appearance color: gray Installation: surface-mountedWorking voltage: 15V (whole system supply power)Monitor outdoor phone and intercom, remotely unlockTime for display: 60 secondsFunction: video intercom, surveillance and unlockingSimple push-button operationReceive alarms and memory alarm informationMonitor turns on instantly when call button is pressedStatus indicators:Power: lights when power is onOperate: lights when system in useScreen size: 4 inches OEM/ODM orders are welcome
