... Dome camera testing and camera testing Transmission channel testing of video Control PTZ protocol RTS-301 CCTV monitor ... connect linear ordering, and display cable numberSupport more than 20 kinds of protocols, including Pelco-D, Pelco-P, Samsung etc ... RS485 at the same timeCommunication protocol: Compatible with more than 20 kinds of protocols: Pelco_D, Pelco_P, Samsung, Panasonic, Lilin, Yaan etc ...