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.<br><br>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: -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: -10C ~ 60C 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<br><br>Package Contents: 1 x Keyboard Controller 1 Supply Adapter<br><br>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.