... password,by key 3: handfree,night vision 4: ultrathin monitor 2 V 3 video intercom system V7E-K1: 7inch color TFT video ... or CCD sensor.6 LED lights,nightvision.**handfree indoor monitor,7 inch TFT,clear image.**intercommunication,monitoring the outdoor,unlock..** ... .0 mmData of Technology:**Night vision illumination distance; more than 2 meters **Gain control: Automatic **Working temperature: -10 C- 50 ...