This self-grounding Back-Up Alarm from Truck Star by Buyers has 97 decibels. Italso comes with 12-24 DC. 97 Decibels 12-24 DC Self-Grounding Low frequency tone Epoxy sealed from moisture, dust and vibration 4″ L x 1-5/8″ W x 2-5/8″ T Full color display box
