SB1-R Smoke Alarm - Toast Proof, Optical Smoke Alarms for Home with Replaceable Battery and Test/Silence Button - Early Smoke Detector Fire Alarm - 90 x 35 mm - White - 2-Pack

Bought for our motorhome easy to install.

I purchased this fire alarm in 2023, and it has been a fantastic product from day one. It came with a one-year battery guarantee, and it worked flawlessly all the way up until yesterday, when I believe the battery finally died. During the time I had it, I never experienced a single issue-the performance was excellent and incredibly reliable. The only real downside is the battery itself. It seems to be irreplaceable, which is a shame because the alarm is otherwise a quality product. If the manufacturer could move toward a greener, more sustainable design that allows for battery replacement, it would make this product both longer-lasting and more environmentally friendly. Overall, I would still recommend this alarm to anyone looking for a dependable option. If you have any questions about my experience, feel free to drop me a message, I’m happy to help.

Perfect for my needs

Okay, I'm not a DIY Whizz, but this is fiddly to fit. Once the base plate is on then twisting it in place is very awkward. A design fault in my view

This smoke alarm is very good in so many ways: toast proof (a really useful feature); cleverly designed so that it can't be fitted to its mounting plate without a battery fitted; a test button that is also a temporary mute button, etc. It also gets a great rating from Which? magazine. But, there is one drawback. It seems to be triggered by cold air and warm air mixing. I fitted mine in an unheated corridor and on a cold day, if you open a door to a heated room off that corridor, the warm air escaping from the room sets off the alarm - without a hint of smoke anywhere. The temporary mute button often gets used on cold day!