Backup Alarm 12-48V – 35-137

This backup alarm sounds the moment a lift truck is put in reverse, giving pedestrians and nearby workers an audible warning that the equipment is moving toward them. Its 12 to 48 volt operating range is the useful part of the spec: one alarm covers everything from a 12 volt system up through 36 and 48 volt electric trucks, so it fits a wide span of equipment rather than being tied to a single voltage.

Wired into the reverse circuit, it draws power and sounds automatically whenever reverse is selected, with no operator action required. A backup alarm that has gone silent or intermittent leaves a truck operating without the warning it is supposed to give in shared pedestrian space, which is not something to leave unaddressed.

This unit replaces a failed alarm and wires into the same reverse circuit. Confirm the operating voltage of your truck falls within the 12 to 48 volt range and match the mounting style of the alarm coming off.