Sealed Reverse Surface-Mount Self-Adjusting Back-Up Smart Alarm® – 12-24V, 82-107dB, 2 Bolt

World’s first self-adjusting back-up alarm, constantly measuring ambient noise and adjusting their sound level, creating a volume that is safe without being annoying or contributing to noise pollution. Smart Alarms® eliminate the need for constant manual adjustment and help prevent intentional alarm disconnection. Compact housing and rugged construction designed for demanding applications, reverse mounted speaker enhances sound and protects the alarm from dust and moisture ingress. Epoxy sealed against dust, moisture and vibration.