---
title: "Smart Door Knob — $933K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/smart-door-knob"
last_updated: "2026-08-07T20:05:08.497Z"
locale: en
meta:
description: "Niche score 54/100 · $933K/yr market · 772K searches/yr · $40.70 avg price. High returns (5.2%) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · $933K/yr market · 772K searches/yr · $40.70 avg price. High returns (5.2%) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Smart Door Knob — $933K/yr Amazon US Niche (2026) - Flapen"
---
# **smart door knob**
**Worth a look**
Shows a sweet-spot price point ($40.70 avg), but high returns (5.2%) keeps it on the watch list.
Market size 76Growth 36Conversion 37Competition 44Returns 24Price range 95Avg price 95Brand share 38Review moat 60Quality gap 86
**Avg price**
**Incredible****$40.70**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$27.04–$68.46**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.1★**
avg incumbent rating — lower means beatable quality
**Market size**
**Great****$933K**
$933K/yr · 772K searches
**Review moat**
**Good****1,099.57**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****59%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Okay****3.0%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Okay****+8.5%**
90-day search growth — must beat 0% to launch
**Returns**
**Bad****5.2%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, smart door knob is a $933K/yr Amazon United States market (772K searches/yr). The top 5 brands hold 82% of demand. Verdict: Worth a look — 54/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **smart door knob market data**
- **Units sold / yr**
- **20K–25K**
- avg 750–1,000/product
- **Revenue / yr**
- **$814K–$1.0M**
- units × avg price
- **Conversion rate**
- **3.0%**
- **Avg BSR**
- **#101**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **7.2%**
- **Avg brand age**
- **32 months**
- **Avg seller age**
- **150 days**
## **Competition & brand share**
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▼falling
**Sellers**
**32**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**59%**
Top 20: 96%
**Open market**
**14%**
- KLLOQUE33% - Evanshow31% - GHome Smart7% - AIMNAPS6% - Yamiry5% - ThorBolt4% - Open — no brand owns it (6 brands, 14%)
## **Demand & seasonality**
Weekly Amazon search volume, last 103 weeks — +8.5% search growth over the last 90 days.
25K15KSpike '24Holiday '24Prime Day '25Black Friday '25Spike '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/smart-door-knob/trend)
## **Top smart door knob search terms**
- **fingerprint door knob**217K/yr+23.0%2.5% conv. - **finger print door knobs**153K/yr+2.3%2.2% conv. - **biometric door knob**51K/yr-18.9%2.4% conv. - **fingerprint door lock for bedroom**44K/yr-0.3%2.1% conv. - **thumbprint door knob**36K/yr+6.6%2.5% conv. - **thumb print door lock**35K/yr-0.1%2.4% conv. - **fingerprint door handle**24K/yr+38.4%2.1% conv. - **door knob with fingerprint lock**20K/yr+4.3%2.0% conv. - **smart bedroom door lock**26K/yr+1.9%1.4% conv. - **door knob fingerprint**10K/yr+131.7%2.2% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/smart-door-knob/search-terms)
## **Top smart door knob 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%$93K20%$187K30%$280K40%$373K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Fingerprint Door Lock Smart Fingerprint Door Knob with Lock Biometric Door knob with App Control & Key Keyless Thumbprint Entry Door Lock for Bedroom Front Door Home Apartment Office-Matte Black**KLLOQUE**$37.01**4.2★1,130 rev](https://www.amazon.com/dp/B0D1BR28N8) [2**Evanshow Fingerprint Door Lock Biometric Door Knob with Keypad Keyless Entry Door Locks for Bedrooms Home Hotel Office Apartment Black**Evanshow**$28.99**4.1★1,831 rev](https://www.amazon.com/dp/B0F375TD2P) [3**KLLOQUE Fingerprint Door Lock Smart Fingerprint Door Knob with Lock Biometric Door Locks with App Control & Key Keyless Thumbprint Entry Door Locks for Bedroom Front Door Home Apartment-Silver**KLLOQUE**$39.35**4.3★1,547 rev](https://www.amazon.com/dp/B0D1KFGKNF) [4**Evanshow Fingerprint Door Lock Biometric Door Knob with Keypad Keyless Entry Door Locks for Bedrooms Home Hotel Office Apartment Silver**Evanshow**$28.37**4.1★1,831 rev](https://www.amazon.com/dp/B0FCSRS5Q4) [5**Fingerprint Door Lock- Smart Door knob biometric Door Lockwith passcode keypad keyless Entry Door Handlefor Bedroom Home Hotel Office Apartment (Black with APP)**OFFTV**$48.92**4.0★854 rev](https://www.amazon.com/dp/B0C3VJH159)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Evanshow Smart Door Knob Fingerprint Lock 4-in-1 Keyless Entry (Fingerprint/App/Code/Key) Biometric Door with Auto-Lock Easy Install for Home/Bedroom/Office-Black**Evanshow**$39.48**98 rev3mo ago](https://www.amazon.com/dp/B0GXV2F5B6) [**ThorBolt G1 Fingerprint Door Knob Lock with Keypad Biometric Door Knob Auto-Lock 4* AAA Alkaline Batteries Interior Door Lock for Bedroom Garage Office Pantry Door Black**ThorBolt**$38.71**219 rev5mo ago](https://www.amazon.com/dp/B0FWJZXHBW) [**GeekTale Fingerprint Door Lock for Bedrooms Fingerprint Door Knob with Lock Smart Door Lock App Control Back-up Keys Thumbprint Door Knob for Bedrooms Office Apartment**GeekTale**$39.74**16 rev5mo ago](https://www.amazon.com/dp/B0GLNGBG6Q) [**Fingerprint Door Knob Smart Door Knob Biometric Door Knob with Code App Control Auto Lock Fingerprint Door Lock Thumb Print Door Knobs for Bedroom Office Apartment**RAFECIEE**$36.80**45 rev8mo ago](https://www.amazon.com/dp/B0FRFJ9VK9) [**Gavdhe Fingerprint Door Lock & Biometric Door Knob with App 3-in-1 Keyless Entry Smart Door Lock with Auto-Lock & Interior Lockable Secure Your Home Office Bedroom & Apartment Black**Gavdhe**$27.53**115 rev9mo ago](https://www.amazon.com/dp/B0FPCY9X6C)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Evanshow Smart Door Knob Fingerprint Lock 4-in-1 Keyless Entry (Fingerprint/App/Code/Key) Biometric Door with Auto-Lock Easy Install for Home/Bedroom/Office-Black**Evanshow**$39.48**4.3★**▲ 237%**](https://www.amazon.com/dp/B0GXV2F5B6) [**GeekTale Fingerprint Door Lock for Bedrooms Fingerprint Door Knob with Lock Smart Door Lock App Control Back-up Keys Thumbprint Door Knob for Bedrooms Office Apartment**GeekTale**$39.74**3.5★**▲ 182%**](https://www.amazon.com/dp/B0GLNGBG6Q) [**Ghome Smart Fingerprint Door Knob with Lock 5-in-1 Keyless Entry Door Lock with Handle App Control Passcode & Key Fingerprint Door Lock for Bedroom Biometric Smart Lock for Apartment & Home**GHome Smart**$47.03**4.0★**▲ 143%**](https://www.amazon.com/dp/B0FGQ77NP5) [**AIMNAPS Smart Fingerprint Door Lock Door Locks for Bedroom Keyless Entry Door Knob (Fingerprint/Code/Key) Auto Lock for Apartment Office-Black**AIMNAPS**$28.55**4.2★**▲ 99%**](https://www.amazon.com/dp/B0FX37K7ZX) [**ThorBolt G1 Fingerprint Door Knob Lock with Keypad Biometric Door Knob Auto-Lock 4* AAA Alkaline Batteries Interior Door Lock for Bedroom Garage Office Pantry Door Black**ThorBolt**$38.71**4.3★**▲ 92%**](https://www.amazon.com/dp/B0FWJZXHBW)
**~~View all trending →~~**
## **What buyers say about smart door knob**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Locking Mechanism**22%
*“Smart entry lock”*
**Assembly/Installation**21%
*“Easy set up”*
**Quality-Overall**10%
*“Excellent product”*
**Ease Of Use**8%
*“Easy to open”*
**Value For Money**7%
*“Money well spent”*
**Security**6%
*“Perfect for privacy”*
**Efficiency**3%
*“works flawlessly”*
**Advertised Vs Actual Product**2%
*“As advertised”*
**Design-Overall**2%
*“the appearance is sleek”*
**Battery Life**2%
*“Battery life great”*
### **What buyers complain about **
**Locking Mechanism**17%
*“Wont lock”*
**Durability**12%
*“Does not last”*
**Functionality-Overall**10%
*“does not function correctly”*
**Quality-Overall**7%
*“Poor Quality Control”*
**Assembly/Installation**6%
*“Not easy to install at all”*
**Instructions/User Manual/Troubleshooting**5%
*“Needs better instructions”*
**Connectivity-Overall**4%
*“Some connection issues”*
**Ease Of Use**4%
*“Impossible to use”*
**Charging**4%
*“Does Not Hold Charge”*
**Battery Life**4%
*“Short battery life”*
### **Top return reasons **
**Size-Overall**18%
**Functionality-Overall**17%
**Locking Mechanism**16%
**Compatibility-Overall**8%
**Defective Material/Parts**7%
**Connectivity-Overall**5%
**Mechanism Issues**5%
**Assembly/Installation**4%
**Value For Money**3%
**Advertised Vs Actual Product**3%
## **Common questions**
- **Is smart door knob profitable to sell on Amazon United States?**
- The niche generates $933K/yr across 23 tracked products. 6 of 7 products launched in the last 360 days are still selling. 90-day search growth is +8.5%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the smart door knob niche?**
- 12 brands and 32 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in smart door knob?**
- Top complaints mined from reviews: Locking Mechanism, Durability, Functionality-Overall. The return rate is 5.2% — above our launch gate.
- **When does demand for smart door knob peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the smart door knob niche?**
- Listings span $27.04–$68.46; the average listing price is $40.70 (sweet spot $15–$100). The average incumbent carries 1,100 reviews — the moat a new listing must climb.
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