OwlCat CCTV SYSTEM KEYBOARD Joystick Keyboard Controller (USED)** THE PRODUCT IS IN GOOD SHAPE BUT THE BOX IS DAMAGED ** Specifications Warning: This control keyboard can only control analog PTZ cameras (or analog DVRs) AHD PTZ cameras (or AHD DVRs) with RS485 communication ports. It cannot control network cameras through the RJ45 port, which is a blank port and has no communication function. Security CCTV System Multi function Controlling Keyboard, RS 485; The keyboard controller is designed to control and