Optical smoke sensor - detects slow smouldering fires. 10yr lifespan Battery powered smoke alarm - 1 year battery lifespan (9V battery included) Toast proof - reduces nuisance alarms + Test and silence button Positioning - bedroom, living room, landing, hallways, dining room
ST-622T 10 Year Thermally Enhanced Optical Smoke Alarm
Thermoptek multi-sensor rapidly detects fast flaming & slow smouldering fires Smart silence - silence false alarms Toast proof - reduces nuisance alarms Thermoptek optical smoke sensor Product life span: 10 year. Battery life: 10 year sealed for life Battery