Self-Adjusting Back-Up Alarm Grommet Mount, Ride-Ready Smart Type With 87-112 dB Range, 12-24 VDC, 0.6 A Draw, Ambient Noise Sensing For Safe Audible Alerts On Trucks, Vans, Buses, And Construction Equipment

This back-up alarm is designed for heavy-duty trucks, vans, buses, and construction equipment. It mounts via a rear grommet and directs warnings to the rear of the vehicle, improving safety during backing maneuvers. The smart, ambient-sensing volume automatically adjusts to ambient noise so warnings stay audible without contributing to noise pollution.

✅ 12-24 VDC operation
✅ 0.6 A current draw
✅ Self-adjusting volume 87-112 dB
✅ Ambient-noise sensing for auto level
✅ Reverse-mounted speaker for enhanced rear sound and protection
✅ Grommet mount for quick installation and rear-directed warning
✅ Epoxy sealed against dust, moisture and vibration
✅ Compatible with standard 4.5" rear lighting grommet (order separately)

💡 What is a handy back-up alarm with ambient noise sensing used for and how does it work? Ambient-sensing back-up alarms continually adjust volume to match surroundings, keeping warnings clear while avoiding noise pollution.
- Maintains audible warnings across noisy environments
- Reduces manual volume adjustments
- Helps deter tampering or disconnection of the alarm
- Works with 12-24 VDC vehicle electrical systems