Quality Certificate: CE, EMC, FCC, ROHS

FEATURE & SPECIFICATION :    
1. 4'' flat  B/W CRT monitor.     
2. CMOS camera,handfree,audio and video communication.     
3. unlock, intercom, call other monitors, monitor outside     
4. 6 LED lights,External power adaptor.     
5. Connection: 4  wire (Up to 5 monitors)