First Alert Hardwired Ionization Sensor Smoke Detector Item #5220841 Model #DCF840D1 making them a sustainable and

making them a sustainable and cost-effective option for your home

fabrics and designs as well as light filtering and blackout options

the more you will appreciate how the Universal's compact size and multiple water connections simplify installations

Guaranteed tight seal each and every use - simply press to seal and again to open

First Alert Hardwired Ionization Sensor Smoke Detector Item #5220841 Model #DCF840D1 making them a sustainable andThe First Alert SMI100 AC Hardwire Interconnect Smoke Alarm with Battery Backup meets new industry standards utilizing First Alert's Precision Detection advance sensing technology. This hardwire smoke alarm is easy to install and replace existing alarms with no need to rewire. Plus interconnect compatible alarms to create a whole home alarm system to help provide an early warning. Precision Detection technology helps reduce cooking nuisance alarms and