Optical Smoke Alarm - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - White

Arrived well packed & tested & fitted. This is 5th one, 1st 2 lasted around 15 years with the sealed Lithium batteries, really good. This is to replace 1 of replacements as it malfunctioned, but will be replaced/ refunded as 5 year warranty which is great, peace of mind

I'm a loyal FireAngel customer and these smoke alarms maintain the brand's excellent reputation. The quality and reliability are second to none, which is exactly what you want from a safety device. Installation is straightforward and they're up and running quickly. The optical sensor technology works perfectly - sensitive enough to detect real smoke threats but smart enough to ignore false alarms like vaping, which is a huge advantage over cheaper detectors. The alarm tone strikes the perfect balance - loud enough to wake you and alert the household, but not so overwhelming that it's painful. There's no annoying constant beeping during normal operation either. The 10-year battery life is fantastic - set and forget peace of mind. The white finish looks clean and unobtrusive on the ceiling. Pro tip: pair these with magnetic mounting pads (as mentioned in my other reviews) for incredibly easy installation without drilling. These are premium smoke alarms that justify the price with superior performance and reliability. When it comes to fire safety, I wouldn't trust anything else. Highly recommended for anyone serious about home safety.

Good smoke alarm, easy to fit. It’s not very loud compared to other smoke alarms I’ve had but it’s audible enough if you’re within range.

The FireAngel Optical Smoke Alarm is exactly what I wanted for peace of mind at home. Installation was quick and straightforward, and the instructions were clear. The alarm itself feels solid and well-built, and I like that it uses optical sensing-it seems very responsive without giving false alarms from cooking or steam. The test function is simple to use, and the loud alarm is reassuringly powerful. Battery life appears solid so far, and it gives a clear low-battery warning, which is very helpful. Overall, it’s a reliable, high-quality smoke alarm that provides confidence without fuss. Highly recommended for home safety.

I needed reliable smoke alarms for my home that weren't overly expensive, and these fit the bill perfectly. They absolutely deserve 5 stars based on their functionality and value. The installation was incredibly easy, no more annoying 3 AM chirps from a dying battery! The test/silence button is straightforward to use. It’s a smoke detector that does exactly what it's supposed to do. Fantastic value for the price and highly recommended for home safety.

Easy to install with a 10 year non renewable battery. No fuss, peace of mind thumbs up be safe

This alarm functions perfectly and has a ten year battery.the alarm is pretty loud so will keep you safe. The smoke detector is very good and it is good value for money. It is compact and looks slimline so you won't be aware of it unless it goes off. A great product!

Bought Sept 22, battery failed new years eve 25/26. So not 10 years then. Not really a replaceable battery. Well it is, cut the cable tie, cut the wires, solder a replacement battery in place. But replacement battery is £6 and a replacement sensor is £12. Ordered a replacement complete unit, but it might be the last ordered from this brand . . .