Anti?Theft Door Phone, 2?Wire System Flexible Hands?Free Intercom for Home Security Systems

RFID key unlockWhen outside the door, use RFID key chain to unlock the door. This item comes with 5 RFID key rings (including added and deleted key rings). In addition, if you need more RFID key rings, you can add the number of RFID key rings according to the need.
Simple OperationUse a plug?in connector and a DIP switcher for quick installation. Flexible cable connection mode, support input/output, branch and mixed modes.With integrated power supply, multi?function and simple operation.
7in color TFT LCDDurable aluminum alloy outdoor unit has rainwater and oxidation resistance. Night sight with white LED. 7in color TFT LCD is radiation?free, low power consumption and high definition.
Hands?free IntercomMonitor the outside of the door. Volume, brightness and contrast are adjustable. Mute indoor intercom function. Double intercom communication between indoor machines. Hands?free intercom.
2?wire systemA 2?wire system requires only two lines, the power supply, audio, video and control signals, all of which are transmitted through a 2?wire non?polar central power supply. Unlock 2 locks simultaneously.