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Compare retrofit locks, replacement deadbolts, and handle-style options before changing hardware, keyways, or keypad access on an existing door.
AIMNAPS Smart Door Knob with Fingerprint Lock
For the roommate who's always losing keys or the Airbnb host juggling guest access, this smart door knob turns a headache into a breeze. Instead of fumbling with metal keys, you unlock with your fingerprint in half a second. The sensor reads even a slightly sweaty thumb from the gym. No more hiding a spare under the mat.
This lock solves a real problem: who gets in and when. Through the Tuya app, you create temporary codes for the dog walker that expire at 5 PM. You see a log of every entry – no guessing if the cleaner showed up. The auto-lock engages five seconds after the door closes, so you never worry if you forgot to lock up. Perfect for a busy household, a home office, or a short-term rental. You control access from anywhere, and it works with your existing deadbolt or knob setup. No hub needed, just your home's 2.4 GHz Wi-Fi.
Features
- 2.4G WiFi app control via Tuya
- Supports up to 100 fingerprints
- Auto-lock after 5 seconds
- Privacy protection with biometric tech
- Multiple access codes (20 total)
- Remote lock/unlock and access logs
- Share temporary codes for guests
- Includes 2 mechanical keys
- Fast 0.5-second fingerprint unlocking
General specs
- Brand: AIMNAPS
- Seller: Amazon
- ID: B0FX37685J
- Material: Zinc Alloy, Stainless Steel
- Ideal For: Bedrooms, Office, Apartment, Hotel
- Battery Type: 4 AA
- Power Source: Battery
- Unlock speed: 0.5 seconds
- Auto Lock Time: 5 seconds
- Number of Keys: 2
- Unlock Methods: Fingerprint, App, Passcode, Mechanical Key
- App Compatibility: Tuya Smart
- Operating Humidity: 10% to 90%
- Battery Low Warning: Yes
- Number Of Passcodes: 20
- Fingerprint Capacity: 100
- Operating Temperature: -20°C to 60°C
- Connectivity Technology: WiFi 2.4G
- First listed by seller: 5/20/26
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
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FBA means the order is fulfilled by Amazon, even when the seller is a third-party merchant.
Shippable means the offer is listed as available for delivery on Amazon.
New, Used and Refurbished describe the item condition shown for that Amazon offer.
Top live offer
$42.99
Free shipping
New
Third-party seller
FBA
Shippable
New from
$42.99
Only from New + Shippable live offers
New offers
Third-party seller
· FBA · Shippable
$42.99
Third-party seller
· FBA · Shippable
$49.99
Offers updated: 6/4/26
Shipping options
Delivery to 
Russia
Russia
Available
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| Brand | AIMNAPS | mlinlccko | Seahorse Home | Aceele | GYROBALL | Evanshow |
| Model | Smart Door Lock | |||||
| Color |
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| Rating |
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| Price | $42.99 | $78.99 | $144.25 | $70.99 | $26.71 | $36.99 |
| Seller | Amazon | Amazon | Joom | Amazon | Joom | Amazon |
| Update | May 27, 2026 | May 29, 2026 | Feb 12, 2026 | May 29, 2026 | Feb 14, 2026 | May 20, 2026 |
| Power Source | Battery | Battery Powered | Rechargeable | |||
Smart Door Knob with Fingerprint Lock Fast 0.5-second fingerprint unlocking
$42.99
When this device makes sense
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