---
title: "Siterwell Smoke and Carbon Monoxide Detector — $80K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/siterwell-smoke-and-carbon-monoxide-detector"
last_updated: "2026-08-08T14:36:06.926Z"
locale: en
meta:
description: "Niche score 51/100 · $80K/yr market · 15K searches/yr. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $80K/yr market · 15K searches/yr. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Siterwell Smoke and Carbon Monoxide Detector — $80K/yr Amazon US Niche (2026) - Flapen"
---
# **siterwell smoke and carbon monoxide detector**
**Worth a look**
Shows a thin review moat (327 avg reviews), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 20Growth 17Conversion 74Competition 72Returns 84Price range 42Avg price 82Brand share 0Review moat 84Quality gap 80
**Review moat**
**Great****327.36**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Great****1.5%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$80.68**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****6.8%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Good****42%**
top-5 click share — leaders hold, buyers still browse
**Price range**
**Okay****$14.92–$215.51**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****$80K**
$80K/yr · 15K searches
**Growth**
**Bad****-16.0%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United States niche tracking, siterwell smoke and carbon monoxide detector is a $80K/yr Amazon United States market (15K searches/yr). The top 5 brands hold 100% of demand. Verdict: Worth a look — 51/100.
Data updated Jul 30, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **siterwell smoke and carbon monoxide detector market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$40K–$61K**
- units × avg price
- **Conversion rate**
- **6.8%**
- **Avg BSR**
- **#48**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **18.1%**
- **Avg brand age**
- **31 months**
- **Avg seller age**
- **157 days**
## **Competition & brand share**
The top 5 products take 42% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**3 **▲rising
**Sellers**
**24**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**42%**
Top 20: 91%
**Open market**
**0%**
- SITERWELL98% - First Alert1% - Kidde1%
## **Demand**
Weekly Amazon search volume, last 30 weeks — -16.0% search growth over the last 90 days.
400300Spike '26Jan '26Feb '26Mar '26Apr '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/siterwell-smoke-and-carbon-monoxide-detector/trend)
## **Top siterwell smoke and carbon monoxide detector search terms**
- **siterwell smoke and carbon monoxide detector**8K/yr-18.5%5.5% conv. - **siterwell gs886f**3K/yr+14.9%2.8% conv. - **siterwell**3K/yr-30.8%1.4% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/siterwell-smoke-and-carbon-monoxide-detector/search-terms)
## **Top siterwell smoke and carbon monoxide detector 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.
0%4%$3K8%$6K12%$10K16%$13K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**SITERWELL Smoke Detector Combo Smoke & Carbon Monoxide Alarm 10-Year Battery CO Detectors Smoke and Carbon Monoxide Detector with Bilingual Voice Alerts Reduced Nuisance Alarms 1 Pack**SITERWELL**$42.05**4.3★75 rev](https://www.amazon.com/dp/B0DMFLD2BW) [2**SITERWELL Hardwired Interconnected Smoke Detector Carbon Monoxide Detector Combo with 2 AA Batteries Back Up 2 in 1 Smoke and CO Detector with Voice Alert Smoke and CO Alarm with Self-Check 1 Pack**SITERWELL**$38.24**3.8★214 rev](https://www.amazon.com/dp/B09WDRN9F5) [3**SITERWELL Smoke Detector Combo Smoke & Carbon Monoxide Alarm 10-Year Battery CO Detectors Smoke and Carbon Monoxide Detector with Bilingual Voice Alerts Reduced Nuisance Alarms 4 Packs**SITERWELL**$160.21**4.3★75 rev](https://www.amazon.com/dp/B0DMFDTQ9Q) [4**SITERWELL Smoke Detector Hardwired Interconnected Smoke Detector Photoelectric Smoke Alarm with 9V Backup Battery Fire Alarm with Test/Silence Button UL217-10th Listed GS562A 6 Packs**SITERWELL**$99.34**4.4★663 rev](https://www.amazon.com/dp/B0D8KNK3D7) [5**SITERWELL Hardwired Interconnected Smoke and Carbon Monoxide Detector 10 Year Product Life Alarm Smoke Carbon Monoxide Detectors with 2 AA Batteries Back Up Smoke and CO Detector (5 Packs)**SITERWELL**$184.79**3.5★234 rev](https://www.amazon.com/dp/B0D83BCJWZ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SITERWELL Smoke Detector Combo Smoke & Carbon Monoxide Alarm 10-Year Battery CO Detectors Smoke and Carbon Monoxide Detector with Bilingual Voice Alerts Reduced Nuisance Alarms 1 Pack**SITERWELL**$42.05**75 rev1y ago](https://www.amazon.com/dp/B0DMFLD2BW) [**SITERWELL Smoke Detector Combo Smoke & Carbon Monoxide Alarm 10-Year Battery CO Detectors Smoke and Carbon Monoxide Detector with Bilingual Voice Alerts Reduced Nuisance Alarms 4 Packs**SITERWELL**$160.21**75 rev1y ago](https://www.amazon.com/dp/B0DMFDTQ9Q) [**SITERWELL Hardwired Smoke Detector Carbon Monoxide Detector 10 Year Battery Meets UL217-9th Standards Interconnected Smoke and Carbon Monoxide Detector Combo with Bilingual Voice Alerts 1 Pack**SITERWELL**$41.74**69 rev1y ago](https://www.amazon.com/dp/B0DMFJPJS9) [**Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery with Bilingual Voice Alerts Fire Smoke & Carbon Monoxide Alarms for Home Standalone Model 1 Pack**SITERWELL**$37.56**87 rev1y ago](https://www.amazon.com/dp/B0DMF8S77C) [**SITERWELL Smoke Detector 2 in 1 Smoke and Carbon Detectors 10-Year Battery CO Alarm Combo with Bilingual Voice Alerts Reduced Nuisance Alarms 2 Packs**SITERWELL**$81.24**75 rev1y ago](https://www.amazon.com/dp/B0DMFFYFZW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**SITERWELL Smoke Detector Smoke Detector 10 Year Battery with Photoelectric Sensor Fire Alarm with Low Battery and Fault Warning for House and Bedroom UL217 Listed GS525A (2 Packs)**SITERWELL**$38.62**4.5★**▲ 155%**](https://www.amazon.com/dp/B0CQQDYG3G) [**SITERWELL Smoke Detector Hardwired Interconnected Smoke Detector Photoelectric Smoke Alarm with 9V Backup Battery Fire Alarm with Test/Silence Button UL217-10th Listed GS562A 4 Packs**SITERWELL**$69.95**4.4★**▲ 130%**](https://www.amazon.com/dp/B0D8KLNJXF) [**SITERWELL Smoke Detector Smoke Detector 10 Year Battery with Photoelectric Sensor Fire Alarm with Low Battery and Fault Warning for House and Bedroom UL217 Listed GS525A 6 Packs**SITERWELL**$88.18**4.5★**▲ 94%**](https://www.amazon.com/dp/B0CQQGDYNJ) [**SITERWELL Smoke Detector 10 Year Product Life Fire Alarm with Magnetic Fastening Kit Smoke Alarm with Photoelectric Sensor and Low Battery Warning Function for House UL217 Listed GS509A 6 Pack**SITERWELL**$65.61**4.6★**▲ 93%**](https://www.amazon.com/dp/B0CR3721RY) [**SITERWELL Smoke Detector Smoke Alarm 10 Year Battery with Photoelectric Sensor Fire Alarm with Low Battery and Fault Warning for House and Bedroom UL217 Listed GS525A 1 Pack**SITERWELL**$20.39**4.5★**▲ 88%**](https://www.amazon.com/dp/B0CQQGLJZ3)
**~~View all trending →~~**
## **What buyers say about siterwell smoke and carbon monoxide detector**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**25%
*“Easy to mount”*
**Value For Money**13%
*“Great value”*
**Quality-Overall**11%
*“Quality replacement”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Ease Of Use**4%
*“Easy to use”*
**Efficiency**3%
*“Works great”*
**Alarm/Timer Accuracy**3%
*“Great little alarms”*
**Size-Overall**3%
*“Perfect fit”*
**Sensor**3%
*“Detector”*
**Battery Life**2%
*“Love the 10 year battery life”*
### **What buyers complain about **
**Durability**14%
*“Failed after two years”*
**Noise Level**11%
*“began incredibly irritating beeping”*
**Size-Overall**7%
*“Incorrect dimensions, Non-returnable”*
**Value For Money**6%
*“it was a waste of money spent on this product”*
**Functionality-Overall**6%
*“Item Malfunctioned and is now useless”*
**Alarm/Timer Accuracy**5%
*“just mostly false alarms”*
**Battery Life**5%
*“battery not removable”*
**Compatibility-Overall**4%
*“Isnt compatible”*
**Assembly/Installation**3%
*“I wanted something I could easily set up myself, this is not it”*
**Quality-Overall**3%
*“Absolute worst piece of garbage ever”*
### **Top return reasons **
**Size-Overall**18%
**Compatibility-Overall**14%
**Connectivity-Overall**13%
**Functionality-Overall**11%
**Advertised Vs Actual Product**8%
**Alarm/Timer Accuracy**7%
**Value For Money**6%
**Defective Material/Parts**4%
**Battery Life**2%
**Color**2%
## **Common questions**
- **Is siterwell smoke and carbon monoxide detector profitable to sell on Amazon United States?**
- The niche generates $80K/yr across 28 tracked products. 90-day search growth is -16.0%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the siterwell smoke and carbon monoxide detector niche?**
- 3 brands and 24 sellers compete. The top 5 products take 42% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in siterwell smoke and carbon monoxide detector?**
- Top complaints mined from reviews: Durability, Noise Level, Size-Overall. The return rate is 1.5%.
- **What does it cost to enter the siterwell smoke and carbon monoxide detector niche?**
- Listings span $14.92–$215.51; the average listing price is $80.68 (sweet spot $15–$100). The average incumbent carries 327 reviews — the moat a new listing must climb.
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