20.Event Description: By clicking on the ○? sign, an event description list will show up as follow:
21.Record: Press the button to remotely activate the DVR’s record function. Press again to stop recording.
22.Audio: This function allows you to transmit audio from DVR to your PC’s remote site. Select audio source 1/2/3/4, or “OFF” to disable this function.
23.Audio Broadcast: This function is designed to transmit audio (through a microphone) to DVR that has speaker device installed. Keep this button pressed whenever you need to do audio broadcasting. Release this button to stop transmitting audio to DVR.
24.Relay Output: Press the button to trigger relay output.
25.OSD: Press to show OSD information, including camera name, date, time, and event type. Press again to hide them.
