Hardwired smoke/fire alarm

[QuestionsQuestions]

Moved into a house with a hardwired fire/smoke alarm - it was going off pretty much the whole before the landlord emergency helpline kicked in (!!!!)

My question is will this have cost us a load of money in electricity - probably a daft question but feeling really worried that this will have upped our leccy bill - how much on average do these cost per day/month etc?

Any info much appreciated

 

[Wayners]

I was looking up a laptop pc and that's 15p a day.

Your smoke alarm will be a fraction of that .

Look up the alarm power consumption ( watts) and then Google the running cost

 

[SFK]

Assuming it is an AICO (other brands exist) Each needs 0.25W (which is small).

Mains 146E Optical Smoke Alarm + Alkaline Battery | Aico (Ei146e)

www.tlc-direct.co.uk

Electricity Cost Calculator

Use our simple energy calculator to see the running costs of any electrical items using a range of electricity tariffs

www.sust-it.net

Shows it at about 2p per alarm per week.

 

[QuestionsQuestions]

Even if it is continually going off? 2 weeks ago there was a fault and we were away and the alarm was continually going off for 48 hours!

 

[SFK]

The buzzers / Sounders used in these alarms need little power.
Example here showing it needs only mAmps when in operation.

I/O current < 4mA
active current < 30mA

Active Buzzer for Arduino, Raspberry Pi, PIC & AVR Loud for size! | eBay

5v active buzzer module with active low, ideal for micro computer sound signals. sound output is good for a small device at a frequency of approx. Small size only 34(L) x 14(W) x12mm (D).

www.ebay.co.uk

So taking this as a worst case example, it is using 6x more power when on so you have gone from
2p per alarm per week
To
12p per alarm per week (if alarm sounding all the time for that week).

But typically specifications show the peak or most power needed in any scenario, so would expect the specification stands that each needs 0.25W (which is small) whether sounding or quiet.


Your 1000 x Watt (kW) toaster, kettle, oven, microwave, tumbledryer and heaters are where power is being used.
SFK