Decent Quality Smoke Alarm

dj1471

SMCG wrote: »

So if they are in a box and not used I want to know about the date stamp.

Smoke alarms expire 10 years after manufacture, whether used or not. This is because the radioactive material inside degrades over time and renders the smoke alarm ineffective.

Those Aldi ones are the ones I buy, they're actually Kidde ones which is a reputable brand.

Risteard

dj1471 wrote: »

Smoke alarms expire 10 years after manufacture, whether used or not. This is because the radioactive material inside degrades over time and renders the smoke alarm ineffective.

Those Aldi ones are the ones I buy, they're actually Kidde ones which is a reputable brand.

Whilst ionisation detectors have radioactive material within them, optical (photoelectric) detectors and heat detectors do not. However these all have a defined lifespan. Ionisation detectors are not appropriate in most cases. These installations should be compliant with BS5839-6.

southcoastrgi

SMCG wrote: »

Where you open them, they have a sticker. Mines says "replace unit by sept 2015

Wow what an attitude you have, most smoke alarms have a 10 year life span so if they say replace by Sept 2015 then you need to replace them by Sept 2015 which in case you aren't sure was 3 years ago :T