Product Details  cctv 270x Sony CCD PTZ Speed 180/s External D/N Dome Camera. IR sensitive, IR cut filter.480 TV line, Heater/Fan  cctv 270x Sony CCD PTZ Speed 180/s External D/N Dome Camera. IR sensitive, IR cut filter.480 TV line, Heater/Fan  Specifications: PTZ Dome Specification Power SupplyDC 12V, 2A Power Consumption20W Pan Rotation Range0°360° endless Pan SpeedMax 400°/s(64 ranges) Tilt Range90° Automatic flipAuto 180° flip when vertical 90° Preset Position128 Cruise Tracking Group4 groups (16 preset position in each) CommunicationRS485Bus  Baud Rate(RS485)1200/2400/4800/9600bps ProtocolPelco-D, Pelco-P,  Scan between 2 pointsYes Speed limitation by long focusthe dome can auto-adjust the manually control speed based on the current focal lenghGuard position1 Motor speed to preset position8 ranges Temperature Operation -40 TO 60  Environmental humidity0~95%(No Condensation) Protection GradeWeather Proof Housing, TVS1500W Lightning Proof Surge Proof Camera module Specification Image Sensor  Sony 1/4 HAD CCD Effective Pixels No.  380,000 pixels (NTSC), 440,000 pixels (PAL) Lens 18x optical zoom, f=3.6 mm (Wide) to 82 mm (Tele), F1.6 to F3.8  Digital Zoom15x(270x with optical zoom)Sync SystemInternal/External V-LOCKMinimum Illumination 0.01 Lx ( 50 IRE)Horizontal resolution480TV lines S/N rateMore then 50dBWhite BalanceAWB, Indoor, Outdoor, Push Auto, Manual, HUEGainAuto, Manual (-3 to 28db, 2db steps)AE controlAuto, Manual, Backlight compensation Electric shutter 1/501/10000sBacklight compensationOff/On Day/NightOff/On Focus SystemAuto, one-push AF, Manual, IPicture effects Reversal, B/W, Mirror image