... TFT video door phone 2: unlock by ID card,by password,by key,work attendance function 3: handfree,night vision 7" Color ... and Features**plastic camera, unlock by ID card,by password,by key, work attendance function,25000 records,good design,CMOS or CCD ... Technology:**Night vision illumination distance; more than 2 meters **Gain control: Automatic **Working temperature: -10 C- 50 C**Illumination: 0.1 ...