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- Imported
- Tamper resistant locking pins, single button silence test and loud 85dB alarm
- 120-Volt AC power with 9-Volt battery backup (included) to keep alarm functioning during power outage
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The product is a hardwired alarm, also confirm if the wiring polarity is correct and that all wire nut connections are secure. A loose neutral (white wire) connection within the home junction box could prompt a device malfunction. Promote greater household safety with the First Alert 9120B Hardwired Smoke Alarm with Battery Backup. This 120-volt AC smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast-flaming fires and alerts you with a loud 85-decibel alarm.