---
title: "Door Alarm — £79K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/door-alarm"
last_updated: "2026-07-31T12:39:29.864Z"
locale: en
meta:
description: "Niche score 42/100 · £79K/yr market · 150K searches/yr · £10.65 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · £79K/yr market · 150K searches/yr · £10.65 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Door Alarm — £79K/yr Amazon UK Niche (2026) - Flapen"
---
# **door alarm**
**Skip it**
A small market ($79K/yr) — this niche doesn't clear our bar today.
Market size 20Growth 21Conversion 58Competition 39Returns 59Price range 31Avg price 39Brand share 39Review moat 71Quality gap 76
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****649.9**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Good****2.7%**
return rate — above 5% kills the launch gate
**Conversion**
**Good****5.0%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Okay****62%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Okay****£10.65**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****£3.93–£20.05**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-7.1%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£79K**
£79K/yr · 150K searches
According to Flapen's Amazon United Kingdom niche tracking, door alarm is a £79K/yr Amazon United Kingdom market (150K searches/yr). The top 5 brands hold 82% of demand. Verdict: Skip it — 42/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **door alarm market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **£64K–£85K**
- units × avg price
- **Conversion rate**
- **5.0%**
- **Avg BSR**
- **#28**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **90%**
- **Out of stock**
- **7.4%**
- **Avg brand age**
- **47 months**
- **Avg seller age**
- **185 days**
## **Competition & brand share**
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**15 **▼falling
**Sellers**
**36**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**62%**
Top 20: 99%
**Open market**
**15%**
- TECKNET28% - VOXON22% - Noopel13% - SanJie11% - Defender7% - TechRise4% - Open — no brand owns it (9 brands, 15%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -7.1% search growth over the last 90 days.
5K3KSpike '24Prime Day '25Spike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/uk/diy-tools/door-alarm/trend)
## **Top door alarm search terms**
- **door alarm**58K/yr-12.5%3.1% conv. - **door alarms when opened**44K/yr-3.1%4.1% conv. - **door sensor alarm**19K/yr+8.0%2.1% conv. - **door alarms**12K/yr-0.6%4.4% conv. - **door alarm sensor**13K/yr-24.7%3.3% conv. - **door handle alarm**5K/yr-1.6%2.5% conv. [**All search terms **](https://flapen.com/research/uk/diy-tools/door-alarm/search-terms)
## **Top door 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.
0%10%£8K20%£16K30%£24K40%£32K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**VOXON Wireless Door and Window Alarm Sensor 2 Pack 2 Modes Magnetic Window Door Burglar Alarm with 100dB Loud for Kids Safety Home Shop Security**VOXON**£7.87**4.4★1,820 rev](https://www.amazon.co.uk/dp/B084ZHD1XS) [2**Door Alarm Sensor 120dB Window Alarms for Home Security Ultra-Slim Wireless Magnetic Sensor Burglar Alarm with Batteries included for House Flat Shop Office & Garage 2 Pack**Noopel**£8.40**4.4★2,009 rev](https://www.amazon.co.uk/dp/B073XBCNYS) [3**TECKNET Door Alarm Sensor Window Alarms Sensors 2-in-1 Alarm & Chime 3-level Volume Control Door Sensor for Home Security Wireless Burglar Alarms for House Shop Office Garage (3 PCS)**TECKNET**£10.73**4.6★2,144 rev](https://www.amazon.co.uk/dp/B0BY8T29SJ) [4**SANJIE Wireless Door Open Alarm Sensor Chime 600FT Operating Range 55 Ringtones 5 Volume Level with LED Indicator Door Alarm for Home Store Office Security When Opens 1 UK Plug-in Receiver 1 Sensor**SanJie**£14.14**4.3★193 rev](https://www.amazon.co.uk/dp/B0CR3QMGXK) [5**TECKNET Door Alarms When Opened Alarm & Chime Winsow Sensor Home Security With 3-Level Volume Selection Red-Flashing-Ligh Garage Alarms Door Sensor Alarm for Window Garage Pool and Anti-Theft**TECKNET**£10.28**4.6★356 rev](https://www.amazon.co.uk/dp/B0FG23VW2W)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**ChunHee Door Alarms when Opened Door Chime for Business/Home/Shop**ChunHee**£20.05**43 rev3mo ago](https://www.amazon.co.uk/dp/B0GWR3DBW3) [**SANJIE Door Alarms When Opened with Instant & Delayed Alerts 30s/1min/2min/4min Door Left Alarm Sensor Chime 2-in-1 Alarms/Chimes for Home Security Fridge Alarm with 0-120dB Ajar Warning**SanJie**£12.82**18 rev7mo ago](https://www.amazon.co.uk/dp/B0G4M8BQJX) [**Door Window Alarm Sensor Wireless Vibration Alarm Bell for Home Security 95 dB Loud Siren Magnetic Burglar Warning Detector for School Office Shop Shed Hotel Home (2Pack White No Battery)**Unicavu**£3.93**7 rev9mo ago](https://www.amazon.co.uk/dp/B0FX3H5MYF) [**TECKNET Door Sensor Alarm with Remote Control Door Alarms When Opened 4 Modes & 5-Level Volume Window Alarms for Home Security with Sirens Burglar Alarm for Home Shop Office Garage (2 PCS)**TECKNET**£12.19**962 rev10mo ago](https://www.amazon.co.uk/dp/B0FPXGGJGG) [**TECKNET Door Alarms When Opened Alarm & Chime Winsow Sensor Home Security With 3-Level Volume Selection Red-Flashing-Ligh Garage Alarms Door Sensor Alarm for Window Garage Pool and Anti-Theft**TECKNET**£10.28**356 rev1y ago](https://www.amazon.co.uk/dp/B0FG23VW2W)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**ChunHee Door Alarms when Opened Door Chime for Business/Home/Shop**ChunHee**£20.05**4.3★**▲ 307%**](https://www.amazon.co.uk/dp/B0GWR3DBW3) [**TECKNET Door Sensor Alarm with Remote Control Door Alarms When Opened 4 Modes & 5-Level Volume Window Alarms for Home Security with Sirens Burglar Alarm for Home Shop Office Garage (2 PCS)**TECKNET**£12.19**4.5★**▲ 254%**](https://www.amazon.co.uk/dp/B0FPXGGJGG) [**Door Window Alarm Sensor Wireless Vibration Alarm Bell for Home Security 95 dB Loud Siren Magnetic Burglar Warning Detector for School Office Shop Shed Hotel Home (2Pack White No Battery)**Unicavu**£3.93**4.5★**▲ 115%**](https://www.amazon.co.uk/dp/B0FX3H5MYF) [**SANJIE Door Alarms When Opened with Instant & Delayed Alerts 30s/1min/2min/4min Door Left Alarm Sensor Chime 2-in-1 Alarms/Chimes for Home Security Fridge Alarm with 0-120dB Ajar Warning**SanJie**£12.82**4.4★**▲ 102%**](https://www.amazon.co.uk/dp/B0G4M8BQJX) [**TECKNET Door Alarms When Opened Alarm & Chime Winsow Sensor Home Security With 3-Level Volume Selection Red-Flashing-Ligh Garage Alarms Door Sensor Alarm for Window Garage Pool and Anti-Theft**TECKNET**£10.28**4.6★**▲ 81%**](https://www.amazon.co.uk/dp/B0FG23VW2W)
**~~View all trending →~~**
## **What buyers say about door alarm**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**14%
*“Good value for money”*
**Quality-Overall**13%
*“Excellent product”*
**Advertised Vs Actual Product**9%
*“Works as advertised”*
**Noise Level**8%
*“Good, different sounds and really high pitched for the alarm sound”*
**Ease Of Use**7%
*“Easy to use”*
**Assembly/Installation**7%
*“Easy to install”*
**Alarm/Timer Accuracy**6%
*“No false alarms either”*
**Size-Overall**5%
*“Very easy to fit and works well”*
**Security**3%
*“Great addition to my security system”*
**Efficiency**3%
*“It works well”*
### **What buyers complain about **
**Noise Level**13%
*“Really loud”*
**Functionality-Overall**11%
*“Doesnt work”*
**Durability**8%
*“broke easily”*
**Quality-Overall**7%
*“Cheap not very good”*
**Size-Overall**5%
*“didn't fit my door frames”*
**Battery Life**3%
*“Cant comment on how long it will last or how long the battery lasts yet”*
**Assembly/Installation**3%
*“It could not be easier to install”*
**Connectivity-Overall**2%
*“Product requires a hub”*
**Maintenance And Repair**2%
*“Could be improved”*
**Water Resistance**2%
*“wanted to try this on my side gate. its not waterproof”*
### **Top return reasons **
**Functionality-Overall**22%
**Compatibility-Overall**17%
**Size-Overall**10%
**Alarm/Timer Accuracy**9%
**Connectivity-Overall**8%
**Defective Material/Parts**6%
**Noise Level**6%
**Quality-Overall**4%
**Value For Money**3%
**Advertised Vs Actual Product**2%
## **Common questions**
- **Is door alarm profitable to sell on Amazon United Kingdom?**
- The niche generates £79K/yr across 21 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -7.1%. Flapen's verdict: Skip it (42/100).
- **How competitive is the door alarm niche?**
- 15 brands and 36 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in door alarm?**
- Top complaints mined from reviews: Noise Level, Functionality-Overall, Durability. The return rate is 2.7%.
- **When does demand for door alarm peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the door alarm niche?**
- Listings span £3.93–£20.05; the average listing price is £10.65 (sweet spot $15–$100). The average incumbent carries 650 reviews — the moat a new listing must climb.
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