1: 7inch color TFT video door phone 2: unlock by ID card,by password,by key 3: handfree,night vision 4: ultrathin monitor New ... , Model:SMTV7E-DFunction and Features**plastic camera, unlock by ID card,by password,by key, good design,CMOS or CCD sensor.6 LED ... **Talk time delay: 90S **Monitor time delay: 30S **Dissipation: stand-by <0.5W working <10W **Relative humidity: 10 % - 90%(RH ...