Is smoke and carbon monoxide alarm profitable to sell on Amazon United Kingdom?

The niche generates £402K/yr across 18 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -34.9%. Flapen's verdict: Worth a look (50/100).

How competitive is the smoke and carbon monoxide alarm niche?

8 brands and 34 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 92% of demand.

What do buyers complain about in smoke and carbon monoxide alarm?

Top complaints mined from reviews: Durability, Battery Life, Noise Level. The return rate is 1.0%.

When does demand for smoke and carbon monoxide alarm peak?

Demand peaks in Oct–Nov; the busiest month runs 2.1× the quietest.

What does it cost to enter the smoke and carbon monoxide alarm niche?

Listings span £10.85–£36.28; the average listing price is £20.60 (sweet spot $15–$100). The average incumbent carries 3,357 reviews — the moat a new listing must climb.

smoke and carbon monoxide alarm

Worth a look

Shows low returns (1.0%), but soft demand (-34.9% this quarter) keeps it on the watch list.

Returns

Great1.0%

return rate — above 5% kills the launch gate

Conversion

Great10.7%

search→purchase rate — share of searches ending in a sale

Avg price

Great£20.60

avg listing price — sweet spot $15–$100

Price range

Great£10.85–£36.28

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Good£402K

£402K/yr · 183K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay63%

top-5 click share — leaders hold, buyers still browse

Review moat

Okay3,356.94

avg incumbent reviews — the moat a new listing must climb

Brand share

Bad92%

top-5 brand share — brand-locked demand

Growth

Bad-34.9%

90-day search growth — must beat 0% to launch

According to Flapen's Amazon United Kingdom niche tracking, smoke and carbon monoxide alarm is a £402K/yr Amazon United Kingdom market (183K searches/yr). The top 5 brands hold 92% of demand. Demand peaks in Oct–Nov. Verdict: Worth a look — 50/100.

Data updated Jul 22, 2026 · scored weekly · How we score niches

smoke and carbon monoxide alarm market data

Units sold / yr: 15K–20K; avg 750–1,000/product
Revenue / yr: £309K–£412K; units × avg price
Conversion rate: 10.7%
Avg BSR: #25
Page quality: 0%
Prime: 94%
Sponsored: 94%
Out of stock: 1.2%
Avg brand age: 42 months
Avg seller age: 173 days

Competition & brand share

The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 flat

Sellers

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

63%

Top 20: 100%

Open market

Fireangel28%
X-Sense24%
Yezala19%
AEGISLINK11%
Kidde10%
Kitire5%
Open — no brand owns it (2 brands, 3%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -34.9% search growth over the last 90 days.

Peak months: Oct, Nov · busiest ÷ quietest = 2.1×

Open Trend

Top smoke and carbon monoxide alarm search terms

smoke and carbon monoxide alarm88K/yr -41.7%7.3% conv.
carbon monoxide and smoke detector19K/yr -40.9%7.1% conv.
smoke alarm and carbon monoxide detector16K/yr -19.1%7.6% conv.
fire alarm and carbon monoxide detector13K/yr -36.9%7.5% conv.
combination smoke & carbon monoxide detectors7K/yr -23.2%3.2% conv.
smoke and carbon monoxide alarms for home6K/yr +41.4%8.8% conv.
fire and carbon monoxide alarm9K/yr -24.2%8.7% conv.
fire angel smoke and carbon monoxide alarms for home7K/yr -14.2%12.0% conv.
smoke and co2 alarm detector combined5K/yr -16.9%9.2% conv.
carbon monoxide and smoke alarm4K/yr -35.8%8.6% conv.

All search terms

Top smoke and carbon monoxide 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

X-Sense Combination Smoke and Carbon Monoxide Alarm with LCD Display & 10-Year Battery Smoke Alarm for Home Compliant with EN 14604 and EN 50291 Standards SC07

X-Sense£21.684.6★5,992 rev

FireAngel Combination Smoke and Carbon Monoxide Alarm for Home - SCB10-R 10 Year Life Dual Carbon Monoxide Detector and Smoke Alarm with Test and Hush Button - Combined CO and Fire Alarm - White

Fireangel£23.284.4★1,339 rev

Smoke & Carbon Monoxide Alarm with Digital LCD Display Combination Smoke Alarm and Carbon Monoxide Detector Replaceable Battery Smoke and CO Alarm for Your Home Garage Office

Yezala£13.084.4★216 rev

Smoke & Carbon Monoxide Alarm with Digital LCD Display AEGISLINK Combination Smoke and CO Alarm Detector with 10-Year Lifespan & Replaceable Battery and Test/Silence Button SC200

AEGISLINK£17.554.6★3,074 rev

X-Sense Combination Smoke and Carbon Monoxide Alarm with English Voice Alerts Smoke Alarm for Home with Replaceable Battery XP0A-SR 1-Pack

X-Sense£20.134.6★335 rev

Newest

by launch date

2 Packs Smoke & Carbon Monoxide Alarm Replaceable Battery LCD Digital Display 85dB Loud Siren Hush & Self-Test Dual Sensor Fire CO Detector for Home Bedroom Garage Office

Kitire£31.5732 rev

4mo ago

Smoke and Carbon Monoxide Alarm Dual Sensor Combination Smoke CO Detector with Digital Display & Replaceable Battery 85dB Loud Alarm for Home Garage Office RV

Yezala£17.38647 rev

5mo ago

FireAngel Smoke & Carbon Monoxide Alarm SB1-R Battery Smoke Alarm for Home & FA6813 Portable Carbon Monoxide Detector Caravan CO & Fire Monitor Set

Fireangel£22.809,145 rev

10mo ago

2PACK 2-in 1 Smoke and Carbon Monoxide Detector Powered by Battery with Digital Display Dual Sensor Smoke and Carbon Monoxide Alarm Detector Easy to Instal

Yezala£23.2742 rev

1y ago

Smoke & Carbon Monoxide Alarm with Digital LCD Display Combination Smoke Alarm and Carbon Monoxide Detector Replaceable Battery Smoke and CO Alarm for Your Home Garage Office

Yezala£13.08216 rev

1y ago

What buyers say about smoke and carbon monoxide alarm

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall14%

“Solid build quality”

Value For Money13%

“Fairly priced”

Assembly/Installation11%

“Easy to assemble”

Size-Overall8%

“Right fit”

Alarm/Timer Accuracy7%

“Very good alarm, easy to set up and install”

Advertised Vs Actual Product6%

“Works as intended, so far”

Battery Life5%

“10 year battery life makes this a good buy”

Ease Of Use5%

“easy to read”

Compactness3%

“Small and compact”

Efficiency3%

“Works ok”

What buyers complain about

Durability24%

“Failed within 5 months”

Battery Life18%

“Battery Failure”

Noise Level7%

“Loud alarm”

Alarm/Timer Accuracy6%

“False alarms”

Functionality-Overall4%

“contacted them again to say that it did not work cleaning it”

Quality-Overall4%

“Not great quality control”

Size-Overall3%

“the backplate did not fit the unit”

Instructions/User Manual/Troubleshooting3%

“Im only giving it 3 stars because the instructions are very small to read I had to use UTube to see how to set it up”

Value For Money3%

“Would not recommend especially for the price”

Connectivity-Overall2%

“Alarm keeps unconnecting itself from internet”

Top return reasons

Alarm/Timer Accuracy22%

Functionality-Overall21%

Size-Overall12%

Defective Material/Parts8%

Compatibility-Overall5%

Noise Level3%

Product Condition3%

Battery Life3%