First Alert 2pc Smoke Alarm [890515]

It uses optical sensing (known as photoelectric) instead of the more common ionisation so you're less likely to get nuisance alarms from burnt toast or steam. But, if you do, it has a big hush/silence button. Having the Kitemark, CE Mark, a full instruction manual, sealed lithium battery, fixing screws and a manufacturer's 5-year guarantee, you won't do much better than this.

We recommend that you use the test button to test your smoke alarm battery every week and, replace any type of alarm that is 10 years old.

• Battery Powered Smoke Detector (2xAA Batteries Included)
• Features A Test And Pause Button
• 5-year Lifespan And Manufacturer's Warranty
• 85dB Warning Alarm Upon Activation
• Suitable For Wall Mounting Or Free Standing
• Supplied With Fixings; 2 x Screws And 2 x Rawl Plugs
• Dimensions (cm Approx): H 3.5 D 8.5