Feature:1. Standard Network Surveillance Protocol: PTZ camera controller supports standard network surveillance protocol, with good compatibility, scalability and easy operation, you can realize perfect control of network dome camera in just a few steps.2. Compatibility: PTZ camera controller is for Linux based and compatible with most dome security and surveillance IP cameras. It can be paired with a limited number of cameras to set up preset patrol modes and AB scanning.3. Wide Application: PTZ camera controller can be widely used in various important places, such as public security, monitoring, government and telecommunication departments, prosecutor's office, court, bank, insurance, education, taxation, etc.4. 4D Joystick: PTZ camera controller adopts 4D joystick, the joystick controls the up and down, left and right of the ball camera, the ball camera can be zoomed by twisting the joystick, and there is also a confirmation button, the operation is very convenient.5. LCD Display: The PTZ Camera Controller utilizes an LCD display, which provides a very clear readout and improves efficiency during operation.Specification:Item Type: PTZ Dome Camera ControllerMaterial: ABSPower Consumption: Less Than 5WCommunication Interface: RS485 BusCommunication Distance: 1500m (0.5mm Twisted Pair)Communication Protocol: for PELCO D, for PELCO P, for SAMSUNG, ADCommunication Parameters: 8 Data Bits, 1 Stop Bit, No ChecksumJoystick: 4D ( Joystick control ball machine up and down, left and right, the ball machine can be zoomed by twisting the joystick, the joystick has OK buttons.)Display: LCD.Package List:1 x PTZ Keyboard1 x Power Plug 1 x Manual