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First, turn off the AC power at the circuit breaker or fuse box. Next, remove the battery from Smoke Alarms with battery back-up. Finally, press and hold the test button for 5-10 seconds to discharge the …

Your First Alert smoke alarm will reset automatically once the smoke clears and it returns to normal operation. If the "Latching Alarm" indicator is on, you can reset it by pressing the Test/Silence button …

Manual First Alert 9120B. View the First Alert 9120B manual for free or ask your question to other First Alert 9120B owners.

This user’s manual contains important information about your Smoke Alarm’s operation. If you are installing the Smoke Alarm for use by others, you must leave this manual — or a copy of it — with …

View and Download First Alert 9120B user manual online. AC Powered Smoke Alarms. 9120B smoke alarm pdf manual download. Also for: Brk 9120lbl, 9120lblff.

This user manual provides all the information from FIRST ALERT / BRK BRANDS about the model 9120B smoke alarm, as detailed in the table of contents. Reading it completely will address most …