SHT-CN640E/EN Door camera which is up to 4 homes linked with one unit -1/3 "SONY CCD - Horizontal resolution: 500TVL - Coverage: 90 ° - Photosensitivity: Color: 0.2Lux, B / W: 0Lux (IR LEDs on) - IR LEDs: 3 EA, 850nm - Illumination range: Up to 3 meters - Video standard: PAL color system - Camera mode: Not swiveling - Backlight compensation: car - White balance: car - There are 04 name boards - Protection class: IP53 (dust and splash protection