... )Video InputComposite InputCVBS, 1.0Vp-p with 75Ω loadingBT656 optionalAudio I/OCompressionG.726Audio InputMIC In or Line Input Unbalanced, 1.4Vp ... -p, 1VrmsAudio outputUnbalanced, 1.4Vp-p, 1VrmsAlarm I/OAlarm input1 External alarm inputAlarm output1 Relay output(NO) 120VAC ...