... /DC Voltage, AC/DC Current, Resistor, Conductivity, Capacitor and Diode test.DC12V power outputAudio inputAdjustable brightness, contrast, color ... TestAudio input1 channel Audio inputPTZ controllerCommunicationRS232, RS422 simplex and RS485PTZ ProtocolCompatible with more than 20 protocols such as PELCO-D/ ... %-90%Dimension/Weight CCTV PTZ Camera tester with optical fiber tester and digital multimeter