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HEI LIANG HL-JY7 Fingerprint Smart Door Knob1 / 7
Product guide

HEI LIANG HL-JY7 Fingerprint Smart Door Knob

Smart: The HEI LIANG HL-JY7 is a fingerprint door knob with keypad, app control, Bluetooth connectivity, and an emergency physical key. Its listed setup supports interior doors, with fit guidance for door thicknesses from 30–55mm.

At a glance

  • Four entry methods are claimed: fingerprint, passcode, app, and emergency physical key.
  • The app is described as supporting unlock records, auto-lock settings, access modes, and user permissions.
  • A built-in battery has a power display and low-battery reminder, but is non-removable.
  • The listing claims fit for doors 30–55mm thick and installation using a screwdriver.
Price
$39.99Save 20%

Reference price: $49.99

Price checked: Nov 14, 2026

View offer

Pros and cons

Pros

  • Fingerprint, passcode, app, and physical-key access provide several ways to enter.
  • App controls include access management and auto-lock settings, according to the listing.
  • The stated door-thickness range and installation guidance help buyers assess fit before purchase.

Cons

  • The built-in battery is non-removable, so it cannot be swapped out when depleted.

Technical specifications

16 specifications
Identity
BrandHEI LIANG
ModelHL-JY7
Lock typeKeypad
Entry and controls
Wireless connection listedBluetooth
Control methods listedApp, Touch
Automatic lockingAuto-Lock
Dimensions and installation
Form factorRound
Dimensions listed9 x 3 x 3 inches
Weight listed1.3 pounds
Compatible door thickness claimed30–55mm
Materials and appearance
Material listedAluminum
ColorMatte Black
FinishPolished
StyleArt Deco
Power and app features
App features claimedUnlock records, auto-lock settings, access modes, user permissions
Fingerprint response time claimed0.3 seconds

What to know before buying

Listing details to confirm

The manufacturer claims compatibility with most standard US doors and a 30–55mm thickness range. Confirm the door dimensions and fit before installation. The listed battery is non-removable, and the instructions say not to use the lock while charging.

What’s in the box

Included
  • Fingerprint door lock

Who is it for?

A good fit for

  • Buyers seeking fingerprint and passcode entry for an interior bedroom, office, or similar room.
  • Households that want app-based access management and an auto-lock setting.
  • People whose door thickness falls within the stated 30–55mm range.

Less suited to

  • Buyers who need a removable or replaceable battery.
  • Anyone needing a lock specifically confirmed for an exterior entrance or a door outside the stated thickness range.
HEI LIANG HL-JY7 Fingerprint Smart Door Knob · photo 2
Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 892 ratings
  • 5 stars69%69%
  • 4 stars10%10%
  • 3 stars7%7%
  • 2 stars3%3%
  • 1 star11%11%

Customer feedback describes fingerprint recognition and setup positively, and also praises the lock’s appearance, build quality, and perceived usefulness for room access. Experiences with unlocking and battery life are mixed, including reports of charging problems after a few months. That matters because the listing specifies a non-removable battery, while its claimed fingerprint response time and app features are product claims rather than proof that every unit performs consistently.

Positive themes

  • Customers describe fingerprint recognition as accurate and setup as easy.
  • Feedback praises the appearance and build quality, and notes use in college student rooms.

Negative themes

  • Some customers report charging issues after a few months.

Mixed feedback

  • Customer experiences with unlocking and battery life vary.

Frequently asked questions

What ways can the HL-JY7 be unlocked?

The listing claims fingerprint, passcode, app remote unlocking, and an emergency physical key.

Does this lock use a removable battery?

No. The listing describes a built-in, non-removable battery with a power display and low-battery reminder, and says not to use the lock while charging.

What door thickness does the listing say it fits?

It claims suitability for doors 30–55mm thick. Check your door measurements before buying.

Can the app manage access?

The listing says the app can show unlock records, set auto-lock, adjust access modes, and manage user permissions.

HEI LIANG HL-JY7 Fingerprint Smart Door Knob · photo 3
Additional product photo 3

Alternative options

Product details in Markdown