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Compare retrofit locks, replacement deadbolts, and handle-style options before changing hardware, keyways, or keypad access on an existing door.
Lockin LKMSD551 Palm Vein Video Smart Lock: 3-in-1, Dual Biometric Access
Ever wished your front door could recognize you with just a wave? Meet the Lockin Veno Plus Palm Vein Video Smart Lock—your home's new bouncer. It's not just smart; it's genius, blending palm vein scanning (yep, like something out of a spy movie), fingerprint recognition, and a 2K HD 180° camera that sees more than your average peephole. And with a 0.17s unlock speed and 99.9% accuracy, it's faster than fumbling for keys in the dark.
Speaking of seeing, the LockinCam 2K 180° camera is like having eyes in the back of your head—minus the creepy factor. It cuts down blind spots by 75%, giving you a head-to-toe view of whoever's at your door. Plus, with motion detection, night vision, two-way talk, and 8GB storage, it's like your personal security guard that doesn't take coffee breaks or charge monthly.
Worried about battery life? Don't be. This lock sips power so efficiently, a single charge lasts 3 months. And if you're feeling green, the solar charging option has got you covered. The tempered glass finish isn't just for looks—it laughs in the face of bad weather and fading, making it as tough as it is sleek.
Installation? A breeze. 15 minutes, no drilling, and you're set. And with Lockin's 24/7 customer care and a 1-year warranty, you're not just buying a lock; you're buying peace of mind. So why settle for a dumb lock when you can have one that's practically a member of the family?
Features
- Venokey Palm Vein Recognition, Universal Access for Everyone
- LockinCam 2K 180° True Panoramic Camera
- 6 Unlocking Methods, Voice Control Across Ecosystems
- Triple-Layer Security Protection: Local Storage, On-device Processing, & P2P Transmission
- Supports Solar Charging, Built-in Removable Rechargeable Battery, Power That Lasts
- Complete Control From Anywhere Via Lockin App
- Tempered Glass Finish: Weather-Proof & Fade-Resistant
- No False Triggers in Any Weather
- Easy Installation & Worry-Free Customer Support
- 3-in-1, Dual Biometric Access
General specs
- Brand: Lockin
- Model: LKMSD551
- Seller: Amazon
- ID: B0DYJVB2X9
- Shape: Rectangular
- Material: Zinc Alloy
- batteries: 1 Lithium Polymer batteries required. (included)
- Item Weight: 3.66 pounds
- manufacturer: Chongqing Luxiangjia Technology Co., Ltd.
- Control Method: App
- Number of Items: 1
- Number of Pieces: 1
- Special Features: HD Resolution, Night Vision, Auto-Lock
- Battery Cell Type: Lithium Polymer
- Country of Origin: China
- Batteries Included: Yes
- Batteries Required: Yes
- Product Dimensions: 7.24 x 3.29 x 1.48 inches
- Included Components: Interior Assembly, Exterior Assembly
- Date First Available: February 26, 2025
- Water Resistance Level: Waterproof
- : 7.24 x 3.29 x 1.48 inches
- Wireless Communication Technology: Bluetooth, Wi-Fi, Thread
- First listed by seller: 4/5/25
If you are interested in more details, you can find full information on the seller's page.
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New, Used and Refurbished describe the item condition shown for that Amazon offer.
Top live offer
$229.99
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Third-party seller
FBA
Shippable
New from
$229.99
Only from New + Shippable live offers
New offers
Third-party seller
· FBA · Shippable
$229.99
Third-party seller
· FBA · Shippable
$259.99
Sold by Amazon
· FBA · Shippable
$259.99
Offers updated: 6/3/26
Price History for seller Amazon
Shipping options
Delivery to 
Russia
Russia
Available
FAQ
The Lockin LKMSD551 is designed for standard door sizes with a thickness of 1.375 to 2 inches. Ensure your door meets these specifications before installation.
The dual biometric access allows for fingerprint and facial recognition, providing two secure methods to unlock your door without keys.
Yes, with its waterproof rating, the Lockin LKMSD551 is designed to withstand various weather conditions, making it suitable for both indoor and outdoor use.
The Lockin LKMSD551 offers a Bluetooth range of up to 30 feet and Wi-Fi connectivity for remote access from anywhere with an internet connection.
The included Lithium Polymer battery lasts approximately 6 months under normal usage before needing a recharge.
Yes, the Lockin LKMSD551 supports multiple user profiles, allowing you to grant access to family members or employees easily through the app.
In case of a dead battery, you can use the included physical key or an external power bank to temporarily power the lock for access.
While the Lockin LKMSD551 does not natively support voice control, it can be integrated with smart home systems that offer voice control features.
The Lockin LKMSD551 uses advanced encryption for Bluetooth and Wi-Fi communications, along with regular firmware updates to protect against vulnerabilities.
The Lockin LKMSD551 comes with a 2-year limited warranty covering manufacturing defects and hardware malfunctions under normal use.
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Lockin LKMSD551 3-in-1, Dual Biometric Access
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Palm Vein Smart Lock with 2K Security Camera & Video Doorbell Palm vein recognition unlocking
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| Brand | Lockin | Lockin | Lockin | TCL | GHome Smart | Anybell |
| Model | LKMSD551 | Veno Pro | LKMSD411A | D2 Pro | KD10 | |
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| Rating |
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| Price | $229.99 | $349.99 | $179.99 | $169.99 | $82.93 | $289.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | May 15, 2026 | Apr 8, 2026 | May 24, 2026 | May 27, 2026 | Mar 21, 2026 | May 29, 2026 |
| Material | Zinc Alloy | Zinc | Zinc | Aluminum | Zinc | |
| Battery Cell Type | Lithium Polymer | Lithium Polymer | Lithium Polymer | |||
| Batteries Included | Yes | Yes | No | |||
| Lock Type | Biometric, Deadbolt, KeypadBiometric | Biometric, Deadbolt | Biometric, Deadbolt, Combination Lock | Palm Vein Smart Lock, Biometric, Smart Lock Deadbolt | ||
| Special Feature | Motion Sensor, Night Vision, HD Definition, Palm Vein, Auto-Lock, One-Touch Lock | Pincode Unlock, Weather Resistant, Anti-Bump, Auto-Lock, Palm Vein&Fingerprint Recognition | Touchscreen, Doorbell, AI Palm Vein, Rechargeable, Auto-Lock | |||
| Connectivity Protocol | Bluetooth, Matter, Wi-Fi | Bluetooth, Matter, Wi-Fi, Thread | Wi-Fi | Bluetooth, Wi-Fi | ||
Lockin LKMSD551 3-in-1, Dual Biometric Access
$229.99
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