Feature:1. STABLE AND RELIABLE: RS485 bus control, can realize 1500 meters remote control, can ensure stable and reliable communicate with analog coaxial dome camera.2. SUPPORT COMMUNICATE PROTOCOLS: 3D PTZ camera keyboard supports for PELCO D, for PELCO P,AD and other communicate protocols.3. MULTI PURPOSE: RS485 dome camera keyboard is multi purpose, can control the head and lens, can set, start and close the head cruise.4. POWER FAILURE MEMORY: Analog 3D keyboard joystick PTZ controller has power failure memory function, easy to use and restore settings.5. FLEXIBLE OPERATION: The joystick adopts 3D design, which can flexibly control the up, down, left, right and zoom functions of the PTZ.Specification:Item Type: Analog PTZ Camera ControllerMaterial: ABSCommunicate Interface: RS485 BusCommunicate Distance: Approx. 1500meters / 4921ft (Approx. 0.5mm / 0.02in twisted pair)Communicate Protocol: for PELCO D, for PELCO P, ADBaud Rate: 1200bps, 2400bps, 4800bps, 9600bps, 19200bps , 38400bpsCommunicate Parameters: 8 Data Bits, 1 Stop Bit, No ParityJoystick: 3 Dimensional (Joystick Control Ball Machine up and Down, Left and Right, Twisting the Joystick Ball Machine Can Zoom).Package List:1 x Analog PTZ Camera Controller1 x Instruction Manual1 x Adapter