Features: 　 ◆ Support PELCO matrix. ◆ Support 4 keyboards linkage, each keyboard can support 32 domes at most. ◆ Expediently and comfortably use according to ergonomics design. ◆ LCD with back-light can display command menu, protocol, current camera ID, output display ID and joystick status. ◆ Three axis joystick can control speed of pan/ tilt and zoom in/out; Two axis joystick can control speed of pan/ tilt.  ◆ Built-in multi-protocol such as Pelco_P, Pelco_D, VIDO_B02, Pelco matrix and so on; Baud rate can be selected. ◆ Support all shortcut key of dome to handle.  Specification 　 Model  K72-XXX Power  Power supply: 9V-12V AC/DC  Power consumption: 5W Physics  Dimension: 218*180*98(mm)  Net weight: 650g   Gross weight: 1220g Environment  Temperature: 0℃ ～ +50℃  Humidity: 0～95%(Non-condensation) Communication  Type of connection: Six plugs & RJ45  Type of interface: RS-485/422  Baud rate: 2400/4800/9600/19200 bps  Transmitting distance: 1200m(0.5mm twisted pair calbe) Gross Weight 1.2Kg