These protective covers have been helping stop false fire alarms around the world for more than 40 years, without restricting legitimate alarms. The covers offer excellent protection against physical damage (both accidental and intentional), as well as other environments inside and outside. The protective covers are also ideal for inside of walk-in freezers. This device is UL Listed as well as ADA compliant for operation. There is a custom label available for a fee. To view other fire safety products, please click here.