Rely Essentials 4500 Smoke Alarm – Battery Operated Photoelectric Sensor Smoke Detector – Compact 4-Inch Design – Home Fire Protection – Easy Installation – 1 Pack
£18.99
Price: $18.99
(as of May 29, 2026 10:37:43 UTC – Details)
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The Rely Safety team brings decades of life safety expertise, delivering trusted technology to homes and businesses across the U.S. Because home safety shouldn’t be confusing, we design intuitive alarms with clear voice and visual alerts—so families can act quickly and confidently when it matters most.
Reliable smoke detection for everyday protection – Photoelectric sensing helps detect real fire smoke while reducing nuisance alarms from cooking or steam
Simple, no-wiring installation – Installs in minutes with no wiring required and operates on a 9-volt battery (included)
Compact 4-inch design – Slim profile blends into ceilings, making it ideal for apartments, bedrooms, and smaller spaces
Meets current safety standards – UL Listed to UL 217 (9th Edition) for trusted smoke detection performance
Easy to use and maintain – Features a large Test/Hush button, 85 dB alarm, and low-battery alert for dependable everyday use
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