FIRST ALERT / BRK ALARMS BRK 9120B (OLD# 4120B) 120V AC/DC SMOKE DETECTOR Lot of 12

First Alert Brk

9120B

12

NEW

7.32

120V AC Smoke Alarm, With Battery, Fast Install, Better Performance, Reduces Nuisance Alarms, Easy To Install, Easy To Maintain and Quality Engineered For Years Of Virtually Maintenance-Free Service, Ionization Sensor Which Helps Detect Fast Flaming Fires That Consume Combustible Materials Rapidly, 120V AC Interconnectable, With Maximum 18 Compatible Devices, Alarm Can Be Interconnected With Up To 12 Other Compatible Smoke Alarms and 6 Compatible Devices Like Bells, Horns, Repeaters and Door Closers, If 1 Unit Triggers An Alarm, All Smoke Alarms In The Series Will Sound, Power Indicators Show Which Unit In The Series Initiated The Alarm.
Brand: First Alert, Model: BRK 9120B