Smoke alarm prices
Mains powered smoke alarms with battery backup.
Lowest seen£18.99per each
Highest seen£27.79per each
Prices compared3from 3 suppliers
Last checked28 October 2026retail, including VAT
Mains smoke alarm with battery backup
per each| Supplier | Product | Price |
|---|---|---|
| Toolstation | FireAngel Mains Smoke Alarm SW1-R | £18.99 |
| Wickes | FireAngel SW1-R Mains Smoke Alarm | £20.00 |
| Screwfix | Aico Ei146e Mains Interlinked Optical Smoke Alarm | £27.79£30.99 |
What to know before you buy
Private landlords in England must have a working smoke alarm on every storey used as living accommodation, and a carbon monoxide alarm in any room with a fixed combustion appliance other than a gas cooker.
About these prices
Each price is what the supplier's website showed on the date above, including VAT, for supply only. Where an item was on offer, the normal price is shown struck through. Store prices, trade accounts and delivery charges can all differ.
To cost a whole job, add the quantity to the refurbishment budget, which uses the lowest price here as its starting figure, and add labour alongside it.
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