Photoelectric in sulated RS485 controlling mode,strong anti-jamming and long-distance trasmission (Max 1.5km) Control up to 128 units, each unit can be set 1-255 addresses Variable speed orperation can be applied to the built-in Pan/tilt of camera Easy to set and run the preset positions and tour group Easy to set the left and right limiting positions and run the scan between them. Home (default) position can be set up, activated and closed by the controller. LCD display, as man-machine interface, LCD display board is more intuitionist, convenient, each to understand, plentiful information. Communication: RS-485 Protocol: Pelco-D, Pelco-P Baud Rate: 1200 / 2400 / 4800 / 9600 / 19200 Communication Distance: 1500M (4900ft) twisted-pair control functionup,down,left,right,zoom in,zoom out Max controllable Cameras: 128 units Camera ID from: 1 - 255 Ambient Temperature: -10°C ~ 60°C Relative Humidity: 90% RH Power Supply Adaptor Input: 100 - 240V AC Output: DC 12V, 200mA Plug Type :EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Colour:Black Material:plastic Voltage: 110-220V Package Contents: 1 x Keyboard Controller 1 x Power Supply Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.