FIRST ALERT 0827B Smoke Alarm, Ionization Sensor
- Smoke detector with built-in 3 V lithium power cell
- Ionization sensor for efficient smoke detection
- Tamperproof design prevents batteries from being removed
- Incorporates smoke alarm status LED indicator, end-of-life signal and test/silence button
- No battery changes for the life of the alarm
- Mute button mutes unnecessary alarms immediately, also tests alarm function with same button
- End of life warning notifies you when the alarm needs to be replaced
- Emits T3 pattern
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