Herold Supply

Back-Up Alarms

Smart Alarms feature self - adjusting volume; more ambient noise causes the alarm to emit a louder tone!

97 decibels. 12-24 Volt DC

107 decibels. 12 - 36 Volt DC.

Smart Alarm. 82 to 107 decibels. 12 - 36 Volt DC.

82 to 107 decibels. 12 - 36 Volt DC. Smart Alarm.