ST-750T

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!

Very useful replacement for original unit fitted by local fire brigade some years ago. Perfectly fitted original base plate already in ceiling so easy fitting.

These smoke alarms are well rated by independent tests and were very easy to fit and test to confirm working.

Great piece of safety kit very easy to install with a long battery life at a competitive price. Also recommended by my local Fire Brigade !

.These are great fire alarms, very easy to fit and very efficient. I think they deserve a 5 star rating.

Delivered item as description

I replaced like for like as the fitting was already in place. For some reason my old alarm stopped working even though it was indate until 2030.

Ordered 3 of the smoke detectors as my old ones had reached the end of their lives the new ones were the same make so the fixing plates still fits just a small adjustment to the screw holes was needed. So far working well.