Width: 120 mm Projection: 50 mm
Features: General use smoke alarm for living & bedroom areas Advanced photoelectric optical technology, with patented ceiling entry smoke system, for faster smoke detection Sliding battery draw with locking pin for safe & easy battery installation & replacement Equipped with test button & ";hush "; button to stop nuisance alarms Sensory chamber has added benefit of mesh & unique anti-dust coating to protect against dust & insects 30 day low battery warning LED light to indicate standy & alarm mode Loud 85 decibel alarm Easy to install 9v battery & fixings included BS5446 pt 1:2000 10 year guarentee