3 Pack Fire Alarms Smoke Detector Battery Operated with Photoelectric Sensor and Silence Button, Travel Portable Smoke…
Amazon.com Price: $25.99 (as of 06/02/2022 16:41 PST- Details)
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Photoelectric Smoke Alarm Sensing Technology: A faster sensing technology at detecting the dangerous situation than ionisation alarms, red LED will flash and the alarm pattern will sound, Loud 85 decibel alarm with compensation design.
Battery-Powered Smoke and Fire Alarm Detector: no wire needed，not Hardwired
