FireAngel ST-622 10 Year Thermoptek Smoke Alarm review
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- Smoke alarm
- Battery only
- Optical smoke alarm
The FireAngel ST-622 10 Year Thermoptek Smoke Alarm comes with a 10-year lifespan – the battery is sealed inside the alarm, so you’ll never have to replace the batteries. It’s certainly affordable, but how good a job does it do at detecting smoke? We tested it back in 2017, so read on for our test results.
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