4-1/4" Diameter round. Backup alarm provides an audible alert to anyone who might be behind your truck or van. Alert starts beeping when vehicle is put into reverse. Mounts to horizontal or vertical surface with included grommet.

Back-up alarm produces a low frequency tone to warn pedestrians and other drivers that your vehicle is backing up or in reverse. Housing protects against moisture, dust, and vibration. Meets SAE J994 Type A regulations. 12V - 24V operating range.

4-1/4" Diameter round. Backup alarm provides an audible alert to anyone who might be behind your truck or van. Alert starts beeping when vehicle is put into reverse. Mounts to horizontal or vertical surface with included grommet.