mains smoke alarm
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Great£21.79avg listing price — sweet spot $15–$100
Price range
Great£12.74–£47.24cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good737.86avg incumbent reviews — the moat a new listing must climb
Returns
Good2.5%return rate — above 5% kills the launch gate
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Conversion
Okay3.6%search→purchase rate — share of searches ending in a sale
Market size
Bad£81K£81K/yr · 102K searches
Growth
Bad-17.0%90-day search growth — must beat 0% to launch
Competition
Bad95%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, mains smoke alarm is a £81K/yr Amazon United Kingdom market (102K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 34/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
mains smoke alarm market data
- Units sold / yr
- 6K–8K
- avg 500–750/product
- Revenue / yr
- £131K–£174K
- units × avg price
- Conversion rate
- 3.6%
- Avg BSR
- #39
- Page quality
- 0%
- Prime
- 86%
- Sponsored
- 57%
- Out of stock
- 37.7%
- Avg brand age
- 56 months
- Avg seller age
- 169 days
Competition & brand share
The top 5 products capture 95% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 falling
Sellers
20
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
95%
Top 20: 100%
Open market
0%
- Fireangel40%
- BLACK+DECKER37%
- Kidde21%
- Aico2%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -17.0% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.7×
Top mains smoke alarm search terms
- mains smoke alarm23K/yr
- wired smoke alarms for home15K/yr
- wired smoke alarm10K/yr
- hard wired smoke alarms for home4K/yr
- mains power smoke alarms for home4K/yr
- smoke alarm mains powered6K/yr
- mains powered smoke alarms8K/yr
- mains smoke alarms for home6K/yr
- mains fire alarm4K/yr
- smoke alarms for home mains powered4K/yr
Top mains smoke alarm products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
FireAngel SW1-R Mains Smoke Alarm for Home Interlinked Hard Wired Smoke Alarms for Home with Backup Battery Test Button and LED Indicators 1-Pack
Fireangel£13.484.5★2,069 rev
BLACK+DECKER Mains Smoke Alarm. Mains Powered Smoke Detector Interlinked Wired with Battery Back Up. Optical Smoke Alarm for Home with FAST FIX Easy Install Base and Test Button. White
BLACK+DECKER£12.744.4★72 rev
Twin Pack Kidde Firex KF20 Mains Powered Optical Smoke Alarm with 9V Back Up Batteries | KF2 | 4973
Kidde£30.574.6★962 rev
Kidde Firex KF20 Optical Smoke Alarm - Mains Operated with Battery Back Up
Kidde£16.824.6★1,571 rev
BLACK+DECKER Smoke Alarm 2 Pack. 10 Year Lithium Battery Included Smoke Alarm for Home. Easy To Install Optical Smoke Detector Fire Alarm. With Test/Silence Button. White.
BLACK+DECKER£16.984.4★176 rev
Newest
by launch dateBLACK+DECKER Mains Smoke Alarm. Mains Powered Smoke Detector Interlinked Wired with Battery Back Up. Optical Smoke Alarm for Home with FAST FIX Easy Install Base and Test Button. White
BLACK+DECKER£12.7472 rev
BLACK+DECKER Smoke Alarm 2 Pack. 10 Year Lithium Battery Included Smoke Alarm for Home. Easy To Install Optical Smoke Detector Fire Alarm. With Test/Silence Button. White.
BLACK+DECKER£16.98176 rev
BLACK+DECKER CONNECTED Smoke Alarm. Wireless Interlinked 10 Year Lithium Battery Smoke Alarm for Home. Easy Install Optical Smoke Detector Fire Alarm. With Test/Silence Button. White.
BLACK+DECKER£14.7041 rev
FireAngel SW1-R Mains Smoke Alarm for Home Interlinked Hard Wired Smoke Alarms for Home with Backup Battery Test Button and LED Indicators 1-Pack
Fireangel£13.482,069 rev
Aico EI146e Set of 2 Mains Hard Wired Smoke Alarms with 9V Battery Back Up White
Aico£47.24274 rev
Trending
90-day click momentumBLACK+DECKER Mains Smoke Alarm. Mains Powered Smoke Detector Interlinked Wired with Battery Back Up. Optical Smoke Alarm for Home with FAST FIX Easy Install Base and Test Button. White
BLACK+DECKER£12.744.4★
BLACK+DECKER CONNECTED Smoke Alarm. Wireless Interlinked 10 Year Lithium Battery Smoke Alarm for Home. Easy Install Optical Smoke Detector Fire Alarm. With Test/Silence Button. White.
BLACK+DECKER£14.704.2★
BLACK+DECKER Smoke Alarm 2 Pack. 10 Year Lithium Battery Included Smoke Alarm for Home. Easy To Install Optical Smoke Detector Fire Alarm. With Test/Silence Button. White.
BLACK+DECKER£16.984.4★
Aico EI146e Set of 2 Mains Hard Wired Smoke Alarms with 9V Battery Back Up White
Aico£47.244.6★
Kidde Firex KF20 Optical Smoke Alarm - Mains Operated with Battery Back Up
Kidde£16.824.6★
What buyers say about mains smoke alarm
What buyers praise and complain about, mined from review topics.What buyers love
“Quality item and easy installation”
“Easy fit”
“Ease to install”
“the cost is reasonable”
“Perfect replacement for my previous smoke alarms”
“do the job”
“Quick and easy”
“The excellent 10 year lithium battery life included is I have to say an outstanding feature - you definitely get what you pay for here”
“having them connected seems like a good idea”
“The design is clean”
What buyers complain about
“Beware of the batteries running out”
“Not the cheapest”
“Junk - 2 units failed in 6months”
“relatively modest price”
“Doesnt work”
“the connection isn't made”
“I spent hours trying to figure out how to install it”
“The pictures on the front of the box dont show a red LED light indicator”
“This smoke alarm is small”
“The alarm is very loud and woke us up for the last 2 nights, now disconnected”
Top return reasons
Common questions
- Is mains smoke alarm profitable to sell on Amazon United Kingdom?
- The niche generates £81K/yr across 7 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -17.0%. Flapen's verdict: Skip it (34/100).
- How competitive is the mains smoke alarm niche?
- 4 brands and 20 sellers compete. The top 5 products take 95% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in mains smoke alarm?
- Top complaints mined from reviews: Battery Life, Quality-Overall, Durability. The return rate is 2.5%.
- When does demand for mains smoke alarm peak?
- Demand is steady year-round — the busiest month runs 1.7× the quietest.
- What does it cost to enter the mains smoke alarm niche?
- Listings span £12.74–£47.24; the average listing price is £21.79 (sweet spot $15–$100). The average incumbent carries 738 reviews — the moat a new listing must climb.