Fingerprint Door knob, Smart Biometric Door Lock

Smart Biometric Door Lock with Keypad

Fingerprint Door knob, Smart Biometric Door Lock with Keypad, Keyless Entry Code Door Knob, Waterproof & Weatherproof, Auto Lock,Voice Navigation, for Bedroom, Gate,Office

  • [HARMONIZING WITH ANY DOOR] The three locks included in the package share identical keys, offering convenient access. This square fingerprint door knob lock features an elegant design with rounded edges and an illuminated keypad, ensures ultimate grip comfort for you, upgrades your door's style. Unlock your way with fingerprint, keypad, or key. Perfect for entryways, bedrooms, garages, and offices.
  • [FINGERPRINT FOR ALL AGES] This biometric keypad door knob stores up to 100 fingerprints and features advanced AI learning technology that continually enhances its sensitivity and accuracy. Whether for kids or seniors, it recognizes each fingerprint with precision, ensuring seamless access for family members and trusted guests.
  • [USER-FRIENDLY SETUP AND SECURITY] Press and hold the check button for 4 seconds, and the voice guide will help you set everything up—no instructions needed. This digital lock stores up to 50 passcodes (1–15 digits),keyless entry. The auto-lock feature is perfect for added security,ensuring that the gate always locks itself after use. The manual mode offers full control. Guest mode allows easy access without password or fingerprint. Silent mode mutes keypad sounds for quiet use, along with more settings for tailored security.
  • [BUILT TOUGH FOR ALL CONDITIONS] Crafted from high-strength zinc alloy with electroplated finish, this smart lock is engineered for long-lasting durability. Its waterproof electronics and weather-resistant design ensure it performs flawlessly in any environment—whether rain, humidity, or extreme temperatures (-22°F to 176°F). Perfect for both indoor and outdoor use, it’s ready to handle whatever nature throws its way, keeping your property secure year-round.
  • [EASY INSTALLATION, SIMPLE MAINTENANCE] This combination lock fits standard US doors with 2-3/4" or 2-3/8" backsets. No additional drilling required—simply use a Phillips screwdriver to install in minutes. It operates on 2 AAA batteries, lasting over a year. With low battery alerts and a Type-C port for backup power if the batteries run out.

HARMONIZING WITH ANY DOOR

1 Fingerprint 2 Voice prompt 3 Waterproof 4 Versatile 5 Security

Richelock Square Keypad Door Lock

Add to Cart
Customer Reviews4.1 out of 5 stars2054.9 out of 5 stars104.1 out of 5 stars2054.1 out of 5 stars2054.1 out of 5 stars2054.1 out of 5 stars2054.1 out of 5 stars205
Price$37.99$37.99$169.99$169.99$37.99$37.99$79.99$79.99$129.99$129.99$169.99$169.99$169.99$169.99
Double Sided
Fingerprint
Waterproof
Passcode50 Passscode50 Passscode50 Passscode50 Passscode50 Passscode50 Passscode50 Passscode
Fingerprint capacity100100100100100100100
Operate temperatureFrom -22°F to +176°FFrom -22°F to +176°FFrom -22°F to +176°FFrom -22°F to +176°FFrom -22°F to +176°FFrom -22°F to +176°FFrom -22°F to +176°F
Lock TypeHeavy dutyHeavy dutyHeavy dutyHeavy dutyHeavy dutyHeavy dutyHeavy duty
Latch2-3/4"or 2-3/8" backset2-3/4"or 2-3/8" backset2-3/4"or 2-3/8" backset2-3/4"or 2-3/8" backset2-3/4"or 2-3/8" backset2-3/4"or 2-3/8" backset2-3/4"or 2-3/8" backset
FinishElectroplatedElectroplatedElectroplatedElectroplatedElectroplatedElectroplatedElectroplated
Power supply2 AAA2 AA2 AAA2 AAA2 AAA2 AAA2 AAA
Battery Lifeone year2 Yearsone yearone yearone yearone yearone year
UseageIndoor & OutdoorIndoor & OutdoorIndoor & OutdoorIndoor & OutdoorIndoor & OutdoorIndoor & OutdoorIndoor & Outdoor

SKU: B0DYDT9SRF
Weight: 6.3 pounds
Dimensions: 10.5"L x 8"W
Brand: Richelock
Colour: 3 Black Same Key
Batteries Required: Yes
Batteries Included: No
Manufacture: RICHELOCK
Colour: 3 Black Same Key

Product Description

IU51A01FINGERPRINT KNOB 51 01Previous page
  1. FINGPRINT AI BLACK
  2. VOICE FOR IU51
  3. ALL WEATHER IU51
  4. BACKLIT AND OTHER
  5. KEY KW1
Next page

Richelock Square Keypad Door Lock

Matte Black Fingerprint

Buying Options

Double Sided Fingerprint

Satin Nickel Fingerprint

Buying Options

2 Fingerprint Keyed Alike

Buying Options

3 Fingerprint Keyed Alike

Buying Options

4 Fingerprint Keyed Alike

Buying Options

4 Fingerprint Keyed Alike

Buying Options
Customer Reviews 4.1 out of 5 stars2054.9 out of 5 stars104.1 out of 5 stars2054.1 out of 5 stars2054.1 out of 5 stars2054.1 out of 5 stars2054.1 out of 5 stars205
Price $37.99$169.99$37.99$79.99$129.99$169.99$169.99
Double Sided
Fingerprint
Waterproof
Passcode 50 Passscode 50 Passscode 50 Passscode 50 Passscode 50 Passscode 50 Passscode 50 Passscode
Fingerprint capacity 100 100 100 100 100 100 100
Operate temperature From -22°F to +176°F From -22°F to +176°F From -22°F to +176°F From -22°F to +176°F From -22°F to +176°F From -22°F to +176°F From -22°F to +176°F
Lock Type Heavy duty Heavy duty Heavy duty Heavy duty Heavy duty Heavy duty Heavy duty
Latch 2-3/4″or 2-3/8″ backset 2-3/4″or 2-3/8″ backset 2-3/4″or 2-3/8″ backset 2-3/4″or 2-3/8″ backset 2-3/4″or 2-3/8″ backset 2-3/4″or 2-3/8″ backset 2-3/4″or 2-3/8″ backset
Finish Electroplated Electroplated Electroplated Electroplated Electroplated Electroplated Electroplated
Power supply 2 AAA 2 AA 2 AAA 2 AAA 2 AAA 2 AAA 2 AAA
Battery Life one year 2 Years one year one year one year one year one year
Useage Indoor & Outdoor Indoor & Outdoor Indoor & Outdoor Indoor & Outdoor Indoor & Outdoor Indoor & Outdoor Indoor & Outdoor
all function for 51all function set 2

5 Responses

  1. Anonymous says:

     United States

    Great doorknob- square
    This is awesome- looks a little odd but it does its job. Added a blind window to our glass door and we had to figure out a way to fit a new door knob and this was the solution it also has a fingerprint to enter since it will auto lock. Perfect fit.

  2. Anonymous says:

     United States

    Golden Review Award: 4 From Our UsersWhat a nice lock especially for the money
    I was pleasantly surprised how easy this was to install and setup unlike another brand i tried. Very easy to use and it looks good too the automatic locking is a must and it does not disappoint if your looking for an inexpensive digital lock look no further im sure you’ll come to the same conclusion that I did not only that but it only uses 2 aaa batteries which it says ate good for a year only time will tell

    Update: these locks work so well i bought a 2nd one they are by far the best I’ve used that actually work will work the fingerprint scanner i almost always get it on the first try wick is rare on on any device like this we have 2 other brands that work well but not like these

  3. VanAlberoxrmgjbf says:

     United States

    Golden Review Award: 1 From Our UsersGreat door Knob for a good price.
    So far, this has been an excellent knob and has a lot of capability. The fingerprint sensor works well, and the code keys work. It unlocks, and then locks again after about 6 seconds. Can’t really ask anymore out of it. I guess Bluetooth functionality would be cool, but the price point is good for this level of functionality

  4. ShanonBirdsall says:

     United States

    Five-Star Review: Outstanding Security and Ultimate Convenience!
    Switching to this biometric fingerprint doorknob has completely upgraded my home security and daily routine. I no longer have to fumble for keys with full hands or worry about locked-out family members. Why This Smart Lock Stands Out Lightning-Fast Recognition: The biometric fingerprint scanner is incredibly accurate and unlocks the door almost instantly upon touch. Versatile Entry Options: The combination of fingerprint access, a responsive backlit keypad, and a traditional physical backup key offer perfect flexibility. Sleek, Modern Design: The handle looks premium and robust. It completely updates the look of the door while feeling sturdy and secure. Simple DIY Installation: It fit perfectly into my standard door hole. The instructions were clear, and I had it fully installed and programmed in under 30 minutes. Reliable Battery Life: The power efficiency is excellent, and the low-battery warning gives plenty of notice. The external emergency power port is a great safety feature just in case.

  5. Krystal Steinmetz says:

     United States

    Golden Review Award: 35 From Our UsersPerfect for Parents of Special Needs Children Keeps Our Home Safe and Secure
    We purchased these fingerprint scanning door locks because we have a daughter with moderate to severe autism. She is non-verbal, and it’s extremely difficult to communicate with her about boundaries or unsafe areas in the house. For example, she has flooded our bathroom by turning on the bathtub water when unsupervised, and she’s played in the toilet more than once. We needed a way to secure certain areas for her safety and for our peace of mind.

    One of the rooms we secured is my office, which has my work computer and multiple monitors. She’s damaged equipment before, so keeping her out of that space is essential. We also use these locks to keep her out of rooms where dangerous items might be stored or where she could get hurt—like our guest bathroom and bedroom during the day. Our bedroom connects to another bathroom, so securing it means she can’t access that space either.

    After installing the first lock and seeing how well it worked—and how solid and well-made it felt—I immediately bought two more for other areas of the house. I’m seriously considering a fourth for the toilet room in our master bathroom, which has a window that’s not very high off the ground. We’ve caught her playing near it before, and we’re concerned she could fall if she got it open. With the door locked, that area stays safely out of reach.

    I’ve seen reviews where people said the fingerprint scanner didn’t work well, but that hasn’t been my experience at all. We’ve tested multiple fingerprints. I programmed mine, and it only unlocks for my fingerprints. My wife tried hers and it didn’t work until I specifically programmed her thumbs—and then both worked instantly. Scanning is fast—about a second—and consistent. Maybe others received defective units, but I’ve bought three, and they’ve all worked flawlessly.

    That said, I wouldn’t use these on an exterior door—I personally don’t trust electronic locks as the only barrier against intruders. Maybe they’d be fine for a mudroom or similar area, but not as your front door lock. Then again, if someone really wants in, they’re probably breaking a window anyway.

    For interior use, especially to keep children safe, I can’t recommend these enough. They’ve brought a lot of peace to our home, and I’m glad we took the chance despite the lower number of reviews. They’re durable, responsive, and have a nice design and feel.

    This review was written by me but rewritten for clarity with help from ChatGPT.