Shopping Cart (0) Quotes (0) Express Ordering All Categories > Back-Up Alarms & Audio-Visual Combo Devices > Backup Alarms > View Items All CategoriesAll Categories Back-Up Alarms & Audio-Visual Combo DevicesBack-Up Alarms & Audio-Visual Combo Devices Backup AlarmsBackup Alarms View Items Backup Alarms Email This Page Download PDF Download PDF Printable Page Backup Alarms Back-Up Alarms & Audio-Visual Combo Devices Close Window Standard and heavy duty backup alarms. Standard alarms available in multi-voltage and adjust to 10dB above ambient noise levels to protect operators and workers. Heavy duty alarms for large off-road equipment generate 107dB at 5 feet.