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Keyless Entry Door Lock, Fingerprint Door Lock with Keypad Biometric Door Knob, Auto-Lock for Interior Doors Thickness up to 2-1/4", Bedroom, Home Office, Garage, 4xAA Alkaline, MD1 Titanium
ThorBolt

Keyless Entry Door Lock, Fingerprint Door Lock with Keypad Biometric Door Knob, Auto-Lock for Interior Doors Thickness up to 2-1/4", Bedroom, Home Office, Garage, 4xAA Alkaline, MD1 Titanium

4.6(968 reviews, all variants)
Amazon's Choicebudget$0-$49100+ bought in past month
#6,724 in Tools & Home Improvement#41 in Door Knobs
smart
Keyless
control
Touch
material
Aluminum, Zinc
lock type
Biometric, Combination Lock, Keypad, Push Button Lock
special feature
Auto-Lock function, Durable construction, Keyless fingerprint entry, Long battery life, Supports 100 fingerprints and 100 passcodes

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AI Verdict

A budget-friendly aluminum and zinc biometric door knob with 3-in-1 unlocking, 100 fingerprint/passcode capacity, and auto-lock for interior doors up to 2-1/4" thick.

Strong Fit

This lock is a strong fit for anyone needing a straightforward, budget-friendly keyless entry solution for interior doors. Its 3-in-1 unlocking methods and 100-user capacity are robust for its price band, and the DIY installation makes it accessible. The lack of smart features keeps it simple and focused on core security functions.

If you need smart home integration or remote access, look for locks explicitly listing Wi-Fi or Bluetooth connectivity and app support.

Regret Score™

Very High Risk

Lower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity

52/100
vs. 376 Security we've analyzedSafer than 13%
Hidden Defects
12/35

Issues discovered after purchase

Achilles' Heel
18/25

Critically weak dimension

Expectation Gap
16/20

Amazon rating vs actual quality

Fit Risk
6/20

Chance this product isn't for you

BuyChoice Score
2.2

Pros

  • Unlocks via fingerprint, keypad, or physical key, offering multiple access methods [Feature Highlights].
  • Fingerprint recognition is fast and learns over time for quicker access [Feature Highlights, cite: 4].
  • Supports up to 100 unique fingerprints and 100 passcodes, managed via a single admin code [Feature Highlights, cite: 1].
  • Features an auto-lock function that engages after 5 seconds of inactivity, enhancing security [Feature Highlights, cite: 5].
  • Installation is a straightforward 4-step process using a Philips screwdriver, fitting most US doors [Feature Highlights, cite: 4].
  • Includes a Type-C port for emergency power via a power bank if batteries deplete [Feature Highlights, cite: 4].

Cons

  • Lacks app control and smart home integration, requiring all programming directly on the keypad [Feature Highlights, cite: 8].
  • Requires 4xAA batteries which are not included, and battery life is dependent on battery quality [Feature Highlights, cite: 3].
  • Designed for interior doors only, despite mentioning 'durable construction' and 'water-resistant design' [Feature Highlights, cite: 5].
  • Programming and settings management are done exclusively through the keypad and admin code, without a graphical user interface [Feature Highlights, cite: 8].

Dimension Scores

Detection Accuracy7/10

The fingerprint recognition is described as 'lightning-fast' and features 'intelligent learning capabilities' for improved accuracy over time [Feature Highlights, cite: 4].

Connectivity & Range2/10

This lock operates without any wireless connectivity like Wi-Fi or Bluetooth, meaning there is no remote access or integration with other devices [Feature Highlights, cite: 8].

App & Integration1/10

The product explicitly states it does not use an app, and there are no smart home integration features [Feature Highlights, cite: 8].

Build & Weather Resistance5/10

Constructed from aluminum and zinc alloy with a 'durable construction' and 'water-resistant design', but it is specifically for interior doors, limiting its resistance to external weather conditions [Key Specifications, cite: 5].

Best For

  • Securing interior rooms like bedrooms, home offices, or garages where keyless entry is desired [Product Data, cite: 1].
  • Users who prefer physical keypad and fingerprint access over smartphone app control for simplicity [Feature Highlights, cite: 8].
  • DIY enthusiasts looking for a quick and easy installation process without professional help [Feature Highlights, cite: 4].

Not Recommended For

  • Exterior doors or locations exposed to weather, as it's specified for interior use [Product Data, cite: 1].
  • Smart home ecosystems requiring Wi-Fi or Bluetooth connectivity and app-based management [Feature Highlights, cite: 8].
  • Users needing advanced audit trails or remote access features typically found in more integrated smart locks.

Watch Out For

  • No app control means all fingerprint and passcode management, including adding or deleting users, must be done directly on the keypad using the admin code, which can be less intuitive than an app interface [Feature Highlights, cite: 8].
  • The lock requires 4xAA batteries that are not included, so you'll need to purchase them separately before installation [Feature Highlights, cite: 3].
  • While it has a Type-C port for emergency power, you'll need to have a power bank readily available if the batteries die unexpectedly [Feature Highlights, cite: 4].
  • The 'water-resistant design' is for interior applications, meaning it's not built to withstand outdoor elements like rain or extreme temperatures.

Full Specifications

UPC702367326433
ASINB0D5Y5KQ97
SizeFingerprint
BrandThorBolt
ColorFP titanium
ShapeRounded Rectangle
StyleFingerprint
UsageInterior Doors-Bedrooms, Dormitories, etc, Main Entry Doors ( Avoid rain or moisture ), Offices, Libraries, Rental Properties
FinishMetal
MaterialAluminum, Zinc
Lock TypeBiometric, Combination Lock, Keypad, Push Button Lock
Model NameMD1
Finish TypeMetal
Item Weight1.9 pounds
Part NumberMD1TUS
ManufacturerThorbolt
Control MethodTouch
Controller TypeHand Control, Mechanical knob
Special FeatureAuto-Lock function, Durable construction, Keyless fingerprint entry, Long battery life, Supports 100 fingerprints and 100 passcodes
Number of Pieces1
Special FeaturesAuto-Lock function, Durable construction, Keyless fingerprint entry, Long battery life, Supports 100 fingerprints and 100 passcodes
Item model numberMD1
Product Dimensions7.48 x 2.95 x 2.95 inches
Batteries Included?No
Batteries Required?Yes
Included ComponentsBackup Keys, Exterior Assembly, Installation Hardware, Interior Assembly, Latch Assembly
Item dimensions L x W x H7.48 x 2.95 x 2.95 inches

What Buyers Say

Users consistently highlight the straightforward installation process, often completing it in under 20 minutes with just a Philips screwdriver. The fingerprint sensor receives praise for its speed and accuracy, unlocking doors almost instantly. Many appreciate the multiple unlocking options—fingerprint, keypad, and physical key—providing flexibility and peace of mind. The auto-lock feature is a frequently mentioned convenience, ensuring the door is secured even if forgotten.

“Dude, I got this for my office door, and it was up in like 10 minutes, no joke. Fingerprint works so fast, it's actually kinda wild. Just wish it had an app, but for the price, I can't even complain.”

Common Praise

  • Installation is quick and easy, often taking 5-20 minutes with basic tools.
  • Fingerprint sensor is very fast and accurate, recognizing prints almost immediately.
  • Multiple unlocking methods (fingerprint, keypad, key) offer convenient access.
  • Auto-lock function provides an extra layer of security without manual effort.
  • Keypad buttons light up, making them visible in low-light conditions.
  • The design is described as sleek and the materials feel robust.

Common Complaints

  • No app control means all settings and user management must be done physically on the lock's keypad.
  • Batteries are not included, requiring an additional purchase before installation.
  • The lock is strictly for interior use, limiting its application to external entry points [Product Data, cite: 1].
  • Reliance on a power bank for emergency power if batteries die, which might not always be handy [Feature Highlights, cite: 4].

Ownership Tips

  • The 'intelligent learning capabilities' for the fingerprint sensor do seem to make it more responsive after a few days of use [Feature Highlights].
  • Battery life heavily depends on the brand and quality of the AA batteries used; cheap ones won't last the advertised year [Feature Highlights].
  • The anti-peep technology for passcodes actually works, letting you add random numbers before and after your code to confuse onlookers [Feature Highlights, cite: 4].
  • The physical keys are surprisingly slim, making them easy to carry as a backup without bulk.

Frequently Asked Questions

Does this lock require a smartphone app to operate?

No, this lock does not use a smartphone app. All programming and management of fingerprints and passcodes are done directly on the keypad using an admin code [Feature Highlights, cite: 8].

Can this lock be installed on an exterior door?

No, this lock is designed for interior doors only. While it has a durable and water-resistant construction, it's not intended for outdoor exposure to elements like rain or extreme temperatures [Product Data, cite: 5].

What kind of batteries does it use and are they included?

It uses 4xAA alkaline batteries, which are not included with the lock. Using quality batteries can provide up to 1 year of battery life [Feature Highlights, cite: 3].

What happens if the batteries die?

If the batteries run out, you can use one of the two included backup physical keys to unlock the door. Alternatively, there's a Type-C port on the bottom to connect a power bank for emergency power [Feature Highlights, cite: 4].

How many fingerprints and passcodes can it store?

The lock supports up to 100 unique fingerprints and 100 distinct passcodes for access [Feature Highlights, cite: 1].

Buying Guide

When you're looking at a keyless door lock like this, you need to think about how you actually want to get in. This one gives you options: your finger, a code, or a regular key. Since it's battery-powered, you'll want to keep an eye on that, but the emergency Type-C port is a smart backup. Don't expect to control it from your phone, though; it's all about direct interaction at the door.

Biometric (Fingerprint) Entry

This means you can unlock the door with just your unique fingerprint, like unlocking your phone. It's super fast and convenient, especially when your hands are full, and you don't have to remember a code or find a key.

Auto-Lock Function

This feature automatically locks the door after a short period (5 seconds here) if you forget to. Think of it as a built-in safety net, so you never have to second-guess if you locked up after leaving a room.

100 Fingerprints and 100 Passcodes

This tells you how many different people can have their fingerprint or a unique code stored in the lock. For a home or small office, 100 is plenty, allowing access for family, friends, or employees without sharing one code.

Interior Doors Thickness up to 2-1/4"

This is crucial for installation. It means the lock is designed to fit doors within that specific thickness range. Measure your door before buying to make sure it's compatible, otherwise, the lock won't install correctly.

Alternatives

If this lock doesn't fit your needs, look for models with Wi-Fi or Bluetooth for app control and smart home integration, or those specifically rated for outdoor use if you need it for an exterior door.

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