Security speed dome camera keyboard controller. Up to 32 speed dome cameras. 2000 feet maximum distance communication. Maximum of 255 addressable preset points and 1~6 tours. Using EIA/RS-485 electrical interface between the keyboard and the the receiver Dome camera or decoder address setting range: 0~255 User can set the communication rate and protocol Able to control functions of the dome camera, e.g. backlight compensation on/off of the camera Able to control various motorized pan-title for horizontal auto scanning with adjustable speed and direction Set or call the set points and cruise tracks of the dome camera. Altogether 255 preset points and 6 cruise tracks can be set. Each track involves 16 preset position and the dwelling time and call speed upon each preset point Manually controls lens zooming, focus, and iris of the camera   COMPARISON DOWNLOAD FAQ Technical Specifications Communication between Speed Dome Camera and the Controller Point-to-multipoint and semiduplex communication Communication mode RS-485 Baud Rate of Communication 2400Bps, 4800Bps, 9600Bps Distance of Communication 2000 feet in maximum Power Supply DC12V/500mA Number of Controlled Speed Dome Camera up to 32 Size 68mm (H) x 140mm (L) x 142mm (W) Weight 1.8 lbs