Security camera 2D keyboard controller is a unit used to directly control terminal receiving devices, such as high/constant-speed dome cameras, decoders, etc. The electric outlet between the controlling keyboard and the receiving terminal is EIA/RS-485, which enables the keyboard to control as many as 32 speed dome cameras other terminal within a maximal communication range of 2000 feet. Using the joystick to control the speed dome camera Dome camera or decoder address setting range: 0~255 Functions controlling the dome camera: such as camera background light compensation on/off Operate the dome camera at different speed setting, speed switching smooth and stable Control the pan tilt auto line scan, speed and direction can be set as well Set or call the set points and cruise tracks of the dome camera. Altogether 128 preset point and 1--6 cruise tracks can be set. Each track involves 16 preset position and the dwelling time and call speed upon each point can be set as well. Manually controls lens zooming, focus, and iris of the camera   COMPARISON DOWNLOAD FAQ Technical Specifications Communication between Speed Dome Camera and the Controller Port to multi-port and half duplex function Communication mode RS-485 Baud Rate of Communication Four baud rates i.e 2400Bps, 4800Bps, 9600Bps, 19200Bps Distance of Communication 2000 feet in maximum Power Supply DC12V/800mA (DC9V/100mA) Number of Controlled Speed Dome Camera up to 32 Size 95mm (H) x 205mm (L) x 205mm (W) Weight 1.2 Kg