First Alert SMI100 Battery-Operated Smoke Alarm Work Belts & Suspenders The Coupler Lock is designed

The Coupler Lock is designed to fit 1-7/8 in

Fixed Resistance

holds 12 quarts (3 gallons)

fold-down locking handle

Each pouch contains one inside pocket

First Alert SMI100 Battery-Operated Smoke Alarm Work Belts & Suspenders The Coupler Lock is designedThe First Alert SMI100 Battery Operated Smoke Alarm is available in a convenient two pack. The SMI100 smoke detector is equipped with First Alert's Precision Detection advanced sensing technology and meets new industry standards. This battery operated alarm is easy to install and the front access battery compartment makes for easy battery replacements. First Alert's Precision Detection advanced sensing technology complies with new industry standards