1.CCTV monitor Tester 2.2.8" LCD screen 3.test video, RS485 ... testing of video Control PTZ protocol RTS-301 CCTV monitor testerFeatures:Low power consumption, 10 hours working ... ordering, and display cable numberSupport more than 20 kinds of protocols, including Pelco-D, Pelco ... at the same timeCommunication protocol: Compatible with more than 20 kinds of protocols: Pelco_D, Pelco_P, Samsung, Panasonic ...