SAFE-T-ALERT® BACKUP ALARM. This economical backup alarm is manufactured by Superior Signals. Epoxy encapsulated circuit board. 97db decibels. Certifications: UL approved, CE, SAE J994 Type C. Voltage: 12-24 Vdc. Spike protected (V): +100/-400. Polarity protected. Size: 4"W x 1.62"D x 2.73"H. Universal mounting. Average amp draw: less than .6amp. 2 year warranty. Instructions included. Made in USA.