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Ionisation Smoke Alarm 9V Battery Twin Pack (instore) at Toolstation for £6.50
Ionisation Smoke Alarm 9V Battery Twin Pack (instore) at Toolstation for £6.50

Ionisation Smoke Alarm 9V Battery Twin Pack (instore) at Toolstation for £6.50

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Picked up this pack yesterday instore, but they didn't show any online
they also do link for £4.26
which is available online. At this price, everyone should have one.

Spend over £10 and its free delivery,
I bought the twin pack and going to give the extra one to a friend.

Remember a lot of smoke alarms should be replaced after 5 or 10 years. I think its to do with failure rates.

11 Comments

http://i.imgur.com/A1K79PN.jpg

Nobody installs smokers these days that are not 230v and battery backed up SURELY !

dbaillieuk18 m ago

Nobody installs smokers these days that are not 230v and battery backed up …Nobody installs smokers these days that are not 230v and battery backed up SURELY !

Yes, Fire Brigades do.

Any smoke alarm is better than no smoke alarm

dbaillieuk10 h, 13 m ago

Nobody installs smokers these days that are not 230v and battery backed up …Nobody installs smokers these days that are not 230v and battery backed up SURELY !

​power is power....230v or 9v or 12v...you just need power...

The become useless because of the half life of radioactive substances. Go for optical.

Original Poster

Sid.Harper

The become useless because of the half life of radioactive substances. Go … The become useless because of the half life of radioactive substances. Go for optical.



I think the halflife of Americium is 432.2 years
from memory I think optical are better in hallways, but ionisation still has its place

AzeemB

I think the halflife of Americium is 432.2 yearsfrom memory I think … I think the halflife of Americium is 432.2 yearsfrom memory I think optical are better in hallways, but ionisation still has its place



In which case I'm clearly wrong. Must be due to build up of dust and general reliability then.

Would also explain why they recommend replacement of optical after 10 years.

Ionization is more effective with flames but in my house I have a heat detector in the kitchen, not a smoke alarm.

quakerphil

Yes, Fire Brigades do.



That's merely a gesture from them , if your going to do it do it right , with mains and battery as back up .

Original Poster

dbaillieuk

That's merely a gesture from them , if your going to do it do it right , … That's merely a gesture from them , if your going to do it do it right , with mains and battery as back up .



They should also be interlinked with each other, and the heat detector in the kitchen (and possibly a carbon monoxide detector near the boiler or any solid fuel burning items)
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