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Safety Track 249 Main Street Belleville, MI 48111 888-286-9829
12-28v 'Alarm' Input
The Alarm Input setting is for DVRs that have an external monitor. This option is to tell the OSD to train
to one camera when a voltage input is received. This option can be used for backup cameras, blind spot
cameras when turn signals are used, to watch a tow truck hook a vehicle when the PTO is engaged, etc.
Example – Backup Camera: The Channel 2 camera is affixed to the license plate. The Alarm 1 wire on the
Alarm Input harness is tapped into the reverse light and the channel on the Alarm Setting is set to Ch2.
When the vehicle is placed in reverse, the OSD will automatically train to Channel 2's camera and display
it full screen. Once the vehicle is taken out of reverse, the OSD will revert to its default setting (quad
display, channel 1, etc.)
Alarm Input OSD
Default OSD
Display
Display
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