The UltraFire ULLS10 is a 10 year optical smoke alarm with a sealed lithium battery designed to last the entire lifespan of the alarm, which is powered up automatically when fitted to the mounting plate for easy installation and peace of mind. A combined test & hush button forms almost the entire face of the alarm, which can even silence the end of life warning for up to 10 hours should it occur during the night.

• Battery: 10 year sealed lithium battery
• Warranty: 10 year manufacturer's warranty
• Optical smoke sensor suitable for hallways, landings, living rooms, and bedrooms
• Smoke detection chamber designed to reduce false alarms and improve detection of real smoke
• Large test & silence button – almost the whole face of the alarm!
• End of life warning can be silenced for up to 10 hours
• Automatically turns on and off when fitted and removed from the base plate
• Suitable for installations complying to BS 5839-6: 2019 Grade F1
• CE marked, UKCA marked, and Kitemarked to BS EN 14604: 2005