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False Fire Alarm Prevention Device
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Protect your fire alarms from pranksters without restricting legitimate alarms
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STOPPER II™ ALARM prevention device consists of a tamperproof, clear polycarbonate shield and frame that fits easily over fire alarms. When lifted to gain access to the actual alarm, it sounds a piercing warning horn bringing immediate attention before the alarm is activated. Justifiable alarms may still be pulled. Proven to deter false alarms in schools, factories, hospitals, hotels, etc. UL and FM approved. Fits alarms up to 5-1/2" x 6-3/4". Uses 9V battery (included). If the alarm is not flush against the wall, order the conduit spacer which will add 2" depth so the STOPPER II will easily fit over your fire alarm.
Please select the specific style number below that best meets your needs.



