UltraFire ULLS10 Optical Smoke Alarm with 10 Year Sealed Lithium Battery Warranty Test & Silence Button Suitable For Hallways, Landings, Living Rooms Bedrooms

10 Year Long Life Battery: Fitted with a sealed lifetime lithium battery, powering your alarm for its full ten-year lifespan 10 Year Warranty: Enjoy peace of mind knowing your alarm is covered for its full ten year lifespan, with additional technical support and warranty protection Reduced False Alarms: Using optical sensor technology, this alarm quickly and accurately detects smoke particles, while better recognising water vapor and dust Extra Large Test & Silence Button: To make testing your alarm more accessible, the test button is almost the full face of the alarm Fully Compliant: CE marked, UKCA marked, and Kitemarked to BS EN 14604: 2005. Suitable for installations complying to BS 5839-6: 2019 Grade F1, Weight: 0.1763698096 pounds