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Black rectangular smart door knob with fingerprint sensor and keypad, 5.7 by 2.7 by 1.5 inches

Meterk Smart Door Knob Fingerprint Lock 4-in-1 Black 5.7x2.7x1.5 in

SKU CH-47AD-M8GPM

A 4-in-1 keyless door knob unlocks by fingerprint, app, code or mechanical key and auto-locks five seconds after closing

  • Fit and compatibilityOut-Opening, Narrow Stile, Store Front Doors
  • Power sourceTrue, false
  • Product typeLocking Systems
  • Main materialMetal
  • Size or dimensions5.7 in × 2.7 in × 1.5 in
  • Color and finishBlack
  • Unlock in 0.5 seconds with 99% fingerprint accuracy
  • Store up to 100 fingerprints, codes or cards for family access
  • Four entry methods: fingerprint, app, keypad and mechanical key
  • All biometric data stays offline in an encrypted local chip
  • Fits 1.18 to 1.97 in thick doors with no drilling required

4-in-1 Smart Door Knob for Home and Office

The Meterk smart door knob replaces a standard handle with a keyless system that accepts fingerprints, a Tuya app code, a keypad entry, or two mechanical backup keys. It is built for families, landlords, or small offices that want to stop carrying physical keys while keeping a simple mechanical fallback.

Fits Standard Wooden Doors Without Drilling

Installation uses the existing bore holes on doors 1.18" to 1.97" thick and works on left- or right-hand swings. The kit includes every tool and a video guide so the swap can be finished in minutes. The only limitation is that it suits out-opening, narrow-stile, or storefront wooden doors; it will not mount on metal frames, thick security doors, or profiles outside the stated thickness range.

Stores 100 Users With 0.5-Second Unlock

Up to 100 fingerprints and 100 codes can be saved locally on the encrypted chip, and the sensor recognises a print in 0.5 seconds. The keypad locks for three minutes after eight failed attempts, and a USB-C port accepts a power bank when the batteries die. The lock auto-secures five seconds after the door closes, and silent mode disables the beeper for night use.

How it compares

Measured against everything we stock in Locks, Deadbolts & Access Control, at today’s prices. Recalculated every night.

Price $53.99
Typical for this category: the median of 358 items is $54.99.

Specifications

Product
Brand nameMeterk
Model nameHand Rivet Nut Setter Kit
Part numberQ1
Product typeLocking Systems
Color and finishBlack
Power
Power sourceTrue, false
Size & build
Main materialMetal
Size or dimensions5.7 in × 2.7 in × 1.5 in
Compatibility
Fit and compatibilityOut-Opening, Narrow Stile, Store Front Doors
In the box
Number of items1 pack

Questions about this item

How can I verify the lock recognises fingerprints at the stated 0.3-second speed after installation?

Enroll a finger in the Tuya app, then press the sensor; the handle unlocks in 0.3 seconds when recognition succeeds.

What comes in the package and what must I source separately?

The pack includes the smart knob, two mechanical keys, mounting hardware and a video guide; four AA batteries and a USB-C power bank for emergency charging are not supplied.

Which door thicknesses does the 5.7 x 2.7 x 1.5 in black model support?

It fits wooden doors 1.18–1.97 in thick, both left- and right-hand swing.

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