Installation guide

User’s Manual
4
Audio In/Out
NOTE:
It is the user’s responsibility to determine if local laws and regulations permit recording audio.
The DVR does not have amplified audio output, so you will need a speaker with an amplifier. The DVR
does not have a pre-amplifier for audio input, so the audio input should be from an amplified source,
not directly from a microphone.
Alarm Input/Output
AI 1 to 4 (Alarm-In): You can use external devices to signal the DVR to react to events. Mechanical or electrical
switches can be wired to the AI (Alarm-In) and GND (Ground) connectors. The threshold voltage of electrical switches
for NC (Normally Closed) is above 2.4V and for NO (Normally Open) is below 0.3V, and should be stable at least 0.5
seconds to be detected. The voltage range of alarm input is from 0V to 5V.
GND (Ground): Connect the ground side of the Alarm input and/or alarm output to the GND connector.
NOTE:
All the connectors marked GND are common.
NO (Normally Open): Connect the device to the COM and NO (Normally Open) connector. NO is a relay output
which sinks 2A@125VAC and 1A@30VDC.
Connector Pin Outs:
AI (1 to 4)
Alarm Inputs 1 to 4
GND
Chassis Ground
COM
Relay Common
NO
Relay Alarm Out (Normally Open)
Factory Reset Switch
The DVR has a Factory Reset switch to the left of the HDMI connector on the rear panel. This
switch will only be used on the rare occasions that you want to return all the settings to the original
factory settings.
CAUTION:
When using the Factory Reset, you will lose any settings you have saved.
To reset the unit, you will need a straightened paperclip:
1. Turn the DVR off.
2. Turn it on again.
3. While the DVR is initializing, the front panel LEDs will blink. When the front panel LEDs blink, poke the
straightened paperclip into the unlabeled hole to the left of the HDMI connector.
4. Hold the reset switch until the DVR’s internal buzzer sounds twice.
5. Release the reset switch. All of the DVR’s settings are now at the original settings it had when it left the factory.
Your DVR can record audio from up to four sources. Connect the audio sources to
Audio In 1, Audio In 2, Audio In 3 and Audio In 4 as needed using RCA jacks.
Connect Audio Out to your amplifier.
NOTE: To make connections on the Alarm Connector Strip, press and hold the button and insert
the wire in the hole below the button. After releasing the button, tug gently on the wire to make
certain it is connected. To disconnect a wire, press and hold the button above the wire and pull out
the wire.