Output interface: Coaxial DC-in jack External power adapter 1 W Black If you want to upgrade your existing CCTV system to a Hi-Tech digital PTZ camera system; BE-DR-AD300 is the prefect solution for you. BE-DR-AD300 is designed to work with Coaxitron® camera; you can easily replace the existing camera system to PTZ camera with your existing wiring, and connect directly to any protocol controller or DVR without any extra controlling wire. It also built-in four options of communication baud rate to connect to RS485 or RS422. BE-DR-AD300 is the prefect solution and the easiest way for your PTZ system.Receiving Interface:Built-in RS485/RS422, Manchester, BI-Phase Code Transmitting output(BNC) With power supply / receiving red LED and signal transmitting green LEDMulti-protocol options available by setting DIP switches such as: Pelco-D, Pelco-P, Molynx, Vicon, Lilin, Diamond, Kalatel, Panasonic, Vcl, Univision, Philips, American Dynamics etc. Features Product colour Black LED indicators Yes