FireAngel ST-750T Thermoptek Smoke Alarm

Very happy with the product. Easy to activate by connecting it to the main plate. I think some comments were because people didn't read instruction, so they believed that they received the product which doesn't work. The point is that alarm has to be activated. What has lots of sense. I have the same model in our rooms which were connected by fire brigade and one of them got faulty after 8 years, which I think it's not bad. I hope replacement will work for many years too.

Arrived very promptly. I was pleased to see that the expiry dates on my 3 units were Dec-2029 and Feb-2030, so they are evidently new stock. If you are wondering, like me, what the difference is between FireAngel's ST-620, ST-622 and ST-750 alarms, all of which are thermoptek, identical in size and seem to have the same specification in the data sheets & manuals supplied by FireAngel, the answer apparently is that the sensors are slightly different, the ST-750 being the newest. The face of the alarm is simple: one big button and one flashing light, unlike some that have multiple buttons for different purposes. There is a single LED that flashes every 40 seconds to show it is operational; I have yet to see how bright this appears at night, so I've not yet put up the one for my bedroom. Incredibly simple to put up; with two long slots in the base plate at 90 degrees to each other, it doesn't matter if your two screws don't go in exactly where you planned! and it means you can rotate the base plate a little if you want the face of the alarm aligned in a particular direction. I gave 5 stars for "battery life" on the basis that the battery is meant to last 10 years, which is a big bonus - no additional expenditure on an expensive 9V battery (or whatever) every two years. Obviously I'll only be able to comment on actual battery life in 2029! I was spending £10 ten years ago on basic smoke alarms, so this one is ace value, having a thermoptek 'heat & optical' sensor. The 'end of life' silence facility is an added bonus, so you aren't driven bonkers by the thing chirruping all night! (nor have to take it down and de-activate it) - it will keep protecting you for up to another 7 days, until you have been able to replace it. Brilliant!

Works perfectly. Looks good quality. It replaces an existing one that lasted 5 years. Batteries NOT replaceable.

Just replaced the last one we had with this identical one. Last one lasted 7 years, not quite the 10 years as promised on the box, but still happy with it, especially as the new one fits the older ones bracket. Would have given it 5 stars but for the battery not lasting. Definitely recommend one though.

Good enough for the fire brigade to approve when they did a safety check.