Upgrade your vehicle’s safety with a back-up alarm that works as intelligently as you do. The Whelen Self-Adjusting Back-Up Alarm automatically detects surrounding noise levels and adjusts its sound output between 87 dB and 112 dB, ensuring a clear, effective warning without creating unnecessary excess noise. Whether on a busy construction site or a quieter service area, the alarm delivers the right level of sound for the environment.

Designed for versatility and durability, the Whelen Self-Adjusting Back-Up Alarm features universal mounting options and your choice of stud or blunt cut wire connections, making installation fast and straightforward. It integrates seamlessly with 12–24 VDC systems, making it ideal for trucks, heavy equipment, utility vehicles, and a wide range of commercial applications.

By automatically balancing safety performance with environmental awareness, this alarm helps reduce noise pollution while maintaining reliable, attention-grabbing alerts. Dependable, adaptive, and built for demanding work environments, it’s a smarter safety solution.