Sanyo VDC-HD3500P User Manual page 8

Use this jack to connect an optional external microphone to listen to the sound while monitoring the surveillance
video, or simultaneously record the video and sound.
This jack supports 3.5-mm diameter monaural microphone plugs, or monaural line-level input plugs
(the left channel only for stereo plugs).
Connect this jack via an audio cable to the audio input jack of an amplified speaker system or the monitor.
Use this cable to connect a 24 VAC or 12 VDC power supply.
There is no power indicator on the camera.
Alarm input cable: Connect an external switch, infrared sensor, or other device to detect alarm conditions
such as the entry of an intruder.
Alarm output cable: Connect a buzzer, lamp, or other alarm device.
Introduction 8/16