1/4" SONY CCD 27X ZOOM Day/Night with 420 TVL, Super Low 0.1Lux Indoor Camera. Great picture in low light, auto focus, buttons on back, light weight compact Very low Lux of 0.1 Lux Power 27x zoom vari-focal OSD Menu/RS-485 control Auto focus Auto electronic shutter Automatic tracking white balance Power 27x zoom with high speed auto focus Camera Specifications Model GW27XZ CCD Type 1/4" SONY  CCD Scanning System NTSC Horizontal Resolution 420TV Line Zoom 27X Minimum Illumination 0.1 Lux/F1.2 S/ N Ratio >48dB Video Output 1.0Vp- p, 75ohm AGC Auto White Balance Auto Exposure Mode Auto iris Electronic Shutter 1/60s(NTSC) Gamma Correction 0.45 Sync. system Internal Focus Mode PF/AF/MF Option Power Supply DC12V ± 5% Control Voltage DC±3V ~ ±12V Operation environment Temperature: -10˚C ~ +50˚C Humidity: 40% ~90%