Heiman Smoke Detector 10 Year Battery, photoelectric Smoke Alarm，1-Pack (3

Features

• MOUNT IT RIGHT. FEWER FALSE ALARMSKeep 10 ft from cooking (even open kitchens), 3 ft from A/C vents & bathroom doors, 4 in from walls. Wrong placement is a leading cause.
• 10-YEAR SEALED BATTERY WITH EOL ALERTBuilt-in sealed lithium battery powers the alarm continuously for 10 years no battery replacements needed. When the unit reaches end of life, a clear audible EOL alert notifies you it's time to replace the detector, ensuring continuous protection throughout its full lifespan.
• UL 217 10TH EDITION CERTIFIEDCertified to the latest smoke alarm safety standard UL 217 10th Edition. This edition introduces enhanced cooking nuisance immunity tests and stricter requirements for modern synthetic-fueled fires, delivering upgraded detection capabilities for today's homes.
• PHOTOELECTRIC SMOKE DETECTIONDual-LED optical chamber detects slow-smoldering fires while reducing cooking false alarms. Smoke sensitivity: 1.652.29%/ft obscuration (per ETL test data). 85dB alarm with LED indicator provides clear alert when smoke is detected.
• ETL LISTED US & CANADA CERTIFIEDIndependently tested and certified to US standard (UL 217 Ed.10) and Canadian standard (CAN/ULC S531 Ed.5). 94V-0 flame-retardant housing. Meets the rigorous requirements of both countries' safety standards for residential smoke alarms.
• EASY INSTALL & RESIDENTIAL USEQuick twist-and-click mounting bracket included no wiring required. Test/Silence button for weekly testing and hushing nuisance alarms. Suitable for bedrooms, living rooms, hallways, and other residential indoor spaces where smoke detection is needed.