PTZ Camera for use with AV-TECH IVS DVRs Supports DVR Camera Communication System DCCS Technology Theres no need to in addition connect RS485 control wires for camera control because the control signals can be transferred by coaxial cables directly when your DVR supports DCCS technology Camera installation is highly simplified to lower labour cost & working hours. Advanced Auto Tracking Accuracy to follow the moving object Rigid & High-Speed Pan Tilt Mechanism with Two-Million Rotation Test Passed for longer operating lifetime Pelco-D & Pelco-P Support for fully compatibility Flexible Colour Shutter Parameters Adjustment to adapt to various light conditions Graphical On-Screen Display Easy Operation via Keyboard Controller Up to 256 preset points & eight preset groups & Auto Scan