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First Alert 3120B smoke detector

About

The First Alert 3120B is part of the Smoke & Carbon Monoxide Detectors test program at Consumer Reports. In our lab tests, Smoke Detector models like the 3120B are rated on multiple criteria, such as those listed below.

Flaming fires: Flaming fires is response time to paper fires with little smoke.

Smoldering fires: Smoldering fires is response time to wood-fed smoky fires.

Specs

Power supply Power supply The power source of the model. Some have backup batteries.
Hardwire, Batt. Backup
Interconnectable Interconnectable Interconnectable means that the alarm can be wired into a system with other alarms. These alarms on one system will all sound if one sounds.
Yes
Hush button Hush button A hush button temporarily turns off the sounding of an alarm. If the stimulus for the alarm remains present, the alarm will begin sounding again within a few minutes.
Yes