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First Alert 3 Hardwired Smoke Detector with Photoelectric Sensor, New in Box.3-pack of 120-Volt hardwire smoke alarms featuring a photoelectric sensor and battery backup for added safety.Key features include: Convenient 9-volt battery backup, silence/test button, dust cover, and an 85-decibel alarm for reliable alerting.
| Category | Electronics > Smart Home & Security > Home surveillance |
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