86 Micro SD Micro SD cardslot entryMicro SDcardConnect to Micro SD card to realizelocal storage.7 Fan port / /Connect to fan to reduce deviceinternal problem.Please note only some seriessupport this function.8 Statusindicatorlight/ / Display device statusPlease refer to the following sheet for I/O port cable function information.PortName Cable SN Cable Port Name Function DescriptionI/O Port1 ALARM_NOAlarm output port. Output alarm signal toalarm device.NO: Normal open alarm output end.2 ALARM_COM Alarm output public end.3 GND Ground end.4 ALARM_IN Alarm input port. It is to receive the on-offsignal from the external alarm source.5 GND Ground end.6 AUDIO_IN/AUDIO_IN1Input audio signal. It is to receive the analogaudio signal from the devices such aspickup.7AUDIO_OUT(optional)This port may have either of the followingfunction, depending on model of the device: Output audio signal to devices such asloud speaker. Input audio signal. It is to receive theanalog audio signal from the devicessuch as pickup.AUDIO_IN 2 (optional)8 GND Ground end.9 VIDEO_OUT Output analog video signal. It can connectto TV monitor to view video.Note:The external connection port above is based on non-IR series which is identical with the externalconnection port of IR series.2.3 ListeningNote:Some products support listening function only.Device ConnectionFirstly connect the pickup to the audio input port of device, and then connect earphone to the audiooutput port of PC. Log in WEB page of the device, click on either one of or both to enablelistening function. When listening function is enabled, the button will become orange. You may click onthe button again to disable listening function.Listening Operation