... System 1. Series NO.: HR-01B 2. 4" B/W Video Door Phone 3. Video and intercom Home Automation ... NO.: HR-01BFunction:Series NO.: HR-01B1) B/W Video Doorphone Kits for villas 2) 4 inch ... B/W CRT Screen, hand-set surface mount 3 ... Voltage: AC110V-240V or 15V DC Power AdapterWorking Current: B/W≤600mA, Color≤400mA,Wiring: 4 wiresCommunication Duration: 6090secAmbient ...