1.Baud rate:1200bps,2400bps,4800bps,9600bps,19200pbs,38400pbs 2.Protocol:Pelco-D ,Pelco-P ,SAMSUNG 3.Communication:RS-485 4.Power input:DC 12V -1A 5.Communication distance:max 1500m The main functions of the keyboard include: 1.The keyboard output adopts photoelectric insulated 485 control, which provides strong anti-jamming and long-range mission 2.The range for e camera or decoder address setup:1-255. 3.Variable-speed operation can be applied to the built-in e of the high speed e camera. 4.Pre-set positions can be setup and previewed in the high speed e camera. 5.Up to four tour routes can be setup and previewed in the high speed e camera, with each tour having a maximum of 16 pre-set positions, dwell time and speed for each pre-set positions programmable. 6.The high speed e camera can be manually / automatically controlled. 7.Lens zoom ratio, focus and iris can be manually controlled. 8.More than one terminals, such as e cameras and decoders, can be controlled. Can control max 128 speed es Password setup function Ambient Temperature: 0 celsius degree-60 celsius degree Relative Humidity:90%RH type:3D Voltage:AC100-240V Plug Type:US Plug,it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on./EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Colour:As Shown Material:plastic Package Contents: 1 * 3D Coaxial CCTV Keyboard Controller 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.