- Standard 4" Mounting: Fits easily into standard 4-inch grommets (sold separately) for a secure, recessed fit.
- High-Output Warning: 107dB sound level meets SAE J994 Type B standards for high-ambient noise environments.
- Rugged Construction: Durable glass-filled nylon housing with epoxy sealing for moisture and vibration resistance.
- Universal Compatibility: Works on both 12V and 24V DC systems.
- Extreme Weather Rated: Operates reliably from -40°F to +185°F (-40°C to +85°C).
Grote 73160 4" Grommet Mounted Backup Alarm – 107dB, 12V/24V Standard Tone
Reliable Audible Safety for Heavy-Duty Applications
The Grote 73160 4-inch Grommet Mounted Backup Alarm is a heavy-duty safety solution designed for seamless integration into your vehicle’s lighting system. Engineered to fit into a standard 4" round grommet, this alarm provides a clean, "flush-mount" look while offering superior protection against environmental damage, debris, and theft.
Loud, Clear, and Durable
With a powerful 107dB standard tone output, the Grote 73160 ensures that pedestrians and workers are alerted long before a vehicle begins to reverse. Built for the most demanding environments, the rugged housing is constructed from glass-filled nylon and is epoxy-sealed. This design protects the internal electronics from moisture, dust, and high-intensity vibration, ensuring consistent performance in extreme temperatures ranging from -40°C to +85°C.
Versatile & Easy Installation
Whether you are upgrading a delivery truck, trailer, or construction equipment, the 73160’s 12V/24V dual-voltage capability makes it compatible with a wide range of electrical systems. The blunt-cut 18-gauge wire leads allow for a straightforward hardwired connection, making it an ideal choice for both OEM replacements and aftermarket retrofits.

