Grote 73040 backup alarm self-grounding 97dB blue electronic

Grote 73040 backup alarm

The Grote 73040 is a self-grounding backup alarm rated at 97 dB for 12-24V DC systems. Its reverse-facing speaker directs the tonal alert rearward for vehicle safety applications. The blue glass/nylon housing mounts via a grommet with blunt-cut wire leads. Adjustable output levels let installers match the alarm to specific operating environments.

Sustained load behaviour

The unit draws 13 A continuously while active across the 12-24V DC range. Fixed tonal output holds at the rated 97 dB without decay during extended reverse cycles. Self-grounding through the mount eliminates a separate ground wire, reducing connection points that can loosen under vibration. The IP rating is not applicable, so the alarm is intended for protected mounting locations.

Upgrade context

This alarm replaces older fixed-output units that lack adjustable levels or self-grounding convenience. The jump is worth it when installers need a single model covering both 12V and 24V fleets with consistent 97 dB output. It does not suit buyers who require an IP-rated enclosure for direct spray exposure or a multi-tone pattern for noise-restricted zones.