The Ecco Electronic 530 Backup Alarm is a powerful and reliable alert and warning device designed for car and truck use. With a sound level of 102 decibels and a waterproof construction, this alarm ensures that you and other drivers are aware of potential hazards. The bolt-on mounting style makes installation easy, while the tonal type alarm provides a clear and consistent sound. Manufactured by ECCO and featuring a glass-filled nylon material, this backup alarm is a high-quality component that operates on a power supply ranging from 12 to 24 volts.