... AD/DC Voltage, AC/DC Current, Resistor, Conductivity, Capacitor and Diode test.DC12V power outputAudio inputAdjustable brightness ... inputPTZ controllerCommunicationRS232, RS422 simplex and RS485PTZ ProtocolCompatible with more than 20 protocols such ... testTest UTP cable connection state and display in the screen. Read the ... 660mA, 10A Manual rangingResistor660, 6.6K, 66K, 660K, 6.6M, 66MΩ auto/manual ...