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.

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.

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

Great4.1★

avg incumbent rating — lower means beatable quality

Market size

Great$933K

$933K/yr · 772K searches

Review moat

Good1,099.57

avg incumbent reviews — the moat a new listing must climb

Competition

Okay59%

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

Brand share

Okay82%

top-5 brand share — brands hold most of the demand

Conversion

Okay3.0%

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

Growth

Okay+8.5%

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

Returns

Bad5.2%

return rate — above 5% kills the launch gate

Signals High Returns

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

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

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.

No pronounced peak months · busiest ÷ quietest = 1.2×

Open Trend

Top smart door knob search terms

fingerprint door knob217K/yr +23.0%2.5% conv.
finger print door knobs153K/yr +2.3%2.2% conv.
biometric door knob51K/yr -18.9%2.4% conv.
fingerprint door lock for bedroom44K/yr -0.3%2.1% conv.
thumbprint door knob36K/yr +6.6%2.5% conv.
thumb print door lock35K/yr -0.1%2.4% conv.
fingerprint door handle24K/yr +38.4%2.1% conv.
door knob with fingerprint lock20K/yr +4.3%2.0% conv.
smart bedroom door lock26K/yr +1.9%1.4% conv.
door knob fingerprint10K/yr +131.7%2.2% conv.

All 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.

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

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$37.014.2★1,130 rev

Evanshow Fingerprint Door Lock Biometric Door Knob with Keypad Keyless Entry Door Locks for Bedrooms Home Hotel Office Apartment Black

Evanshow$28.994.1★1,831 rev

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$39.354.3★1,547 rev

Evanshow Fingerprint Door Lock Biometric Door Knob with Keypad Keyless Entry Door Locks for Bedrooms Home Hotel Office Apartment Silver

Evanshow$28.374.1★1,831 rev

Fingerprint Door Lock- Smart Door knob biometric Door Lockwith passcode keypad keyless Entry Door Handlefor Bedroom Home Hotel Office Apartment (Black with APP)

OFFTV$48.924.0★854 rev

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$39.4898 rev

3mo ago

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$38.71219 rev

5mo ago

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$39.7416 rev

5mo ago

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$36.8045 rev

8mo ago

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$27.53115 rev

9mo ago

What buyers say about smart door knob

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

What buyers love

Locking Mechanism22%

“Smart entry lock”

Assembly/Installation21%

“Easy set up”

Quality-Overall10%

“Excellent product”

Ease Of Use8%

“Easy to open”

Value For Money7%

“Money well spent”

Security6%

“Perfect for privacy”

Efficiency3%

“works flawlessly”

Advertised Vs Actual Product2%

“As advertised”

Design-Overall2%

“the appearance is sleek”

Battery Life2%

“Battery life great”

What buyers complain about

Locking Mechanism17%

“Wont lock”

Durability12%

“Does not last”

Functionality-Overall10%

“does not function correctly”

Quality-Overall7%

“Poor Quality Control”

Assembly/Installation6%

“Not easy to install at all”

Instructions/User Manual/Troubleshooting5%

“Needs better instructions”

Connectivity-Overall4%

“Some connection issues”

Ease Of Use4%

“Impossible to use”

Charging4%

“Does Not Hold Charge”

Battery Life4%

“Short battery life”

Top return reasons

Size-Overall18%

Functionality-Overall17%

Locking Mechanism16%

Compatibility-Overall8%

Defective Material/Parts7%

Connectivity-Overall5%

Mechanism Issues5%

Assembly/Installation4%

Value For Money3%

Advertised Vs Actual Product3%

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.