Detailed Description  CCTV 7" 27X Zoom 1 / 4 CCD PTZ Outdoor Dome Camera The Constant speed colour PTZ Dome Camera is design for installation in an outdoor video surveillance system. the camera incorporates the digital signal processor, pan/tilt mechanism, x27 Optical zoom lens and RS485 communication interface in a compact outdoor enclosure, it is good for a variety of applications including outdoor parking lots, theme parks, shopping malls, airports, train stations and highways. Sony 1/4' Super Had CCDHigh Resolution 480 TV line27x Optical Zoom lensIR sensitive16 preset positions programmable Scan between two preset positionAuto park/focus FunctionStandard RS485 communicationPelco P or D protocalPower up functionHeater and Fan built-inAuto protection Function will be on when power cutting   PTZ Dome Camera Specification Power Supply DC 15V, 2A Power Consumption 24W Pan Rotation Range 0°360° endless Speed Pan speed 20°/s Tilt speed 20°/s Preset position 16 Tilt Range 90° Communication RS485Bus Baud Rate(RS485) 1200/2400/4800/9600bps Protocol Pelco-D, Pelco-P Scan between 2 points Yes Guard position 1 Scan Precision 0.1° ± 0.03° Temperature Operation -40 TO 60 Environmental humidity 0~95%(No Condensation) Protection Grade Weather Proof Housing  Camera Specification Image Sensor  1/4Super Had CCD Resolution 480TV Line Lens  f=3.25-88mm High Durability 27X Zoom Lens Angle of View  48 degrees (w) Horizontal 3 degrees (t) Sync System Internal/Line Lock NTSC 60 Hz , PAL 50HzC Minimum illumination 0.5Lux/0.1Lux with B/W mode IR Sensitive 0Lux with IR on Video Focus Auto/Manual (Near-Far) White Balance Auto/OFF BLC Auto/OFF Electric shutter  1/501/12000s S/N Ratio 50dB Video Output Composite 1.0+/-0.2Vp-p