First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup Size:120V Mid-March through mid-May is the

Mid-March through mid-May is the next best time to plant when the soil temperature reaches 55º+ Fahrenheit and the temperature of the air stays consistently warm

Intelligent Sensing Technology for fewer nuisance alarms

Energy Star: yes

Ideal For High Velocity Heating/Cooling Systems

First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup Size:120V Mid-March through mid-May is theDesigned to help promote household safety, the First Alert Hardwired Smoke Alarm with Battery Backup can provide early warning of fire. This hardwired smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast flaming fires. Features Ionization Sensor Reliably Detects Flaming Fires: The First Alert Hardwired Smoke Alarm with Battery Backup comes equipped with an ionization sensor to provide the earliest possible warning of