... tester, Network cable tester ,PTZ tester, CCTV Camera testerTechnical Parameter ModelST-895Video Signal TestingVideo formatNTSC / ... , SC ST optionalDigital multimeter (independent circuit board with the function of protection)AC/DC Voltage0-660V ... -66000 ~ +6600PTZ control testCommunication InterfaceSupport RS232/RS485 simultaneouslyProtocolcompatible with Pelco-D / P, Samsung, Panasonic, Lilin, Yaan ...