Polished Brass Fingerprint Door Lock - Smart Biometric Knob

In this review of the Polished Brass Fingerprint Door Lock, the reviewer finds a practical, hybrid solution for home and apartment doors that need simple, keyless access plus a fallback key. The biggest reason to consider it is its combination of a fast fingerprint sensor, an app for short-range management, and a conventional key option, which together suit renters or homeowners who want an easy upgrade from a standard knob without rewiring. Installation and daily use are the main selling points for bedrooms and interior doors.

Key Features

• 3-in-1 access: Offers thumbprint, Bluetooth app control, and physical key entry so users can choose the most convenient unlocking method.
• Three operating modes: Passage, entrance, and privacy modes are changed by rotating the knob to match bedroom or common-area needs for privacy and access control.
• Fast recognition: The lock claims a sub-0.1 second thumbprint response and can store up to 20 fingerprints for multi-user households.
• Local fingerprint storage: Biometric templates are stored on the device rather than in the cloud, preserving family privacy and reducing reliance on external services.
• Rechargeable power: Built-in 400mAh battery charges in about 3 hours and includes a visual power display and low-battery alarm to avoid surprise outages.
• Simple installation: Designed to fit most US doors and installs with a screwdriver, making it accessible for DIY upgrades without professional help.

Who It's For

This polished brass smart knob is best for people who want a straightforward, keyless upgrade for interior doors like bedrooms and offices, or for renters who need temporary guest access via Bluetooth. The mix of fingerprint, app control and physical key makes it especially useful for families and shared living situations where different access methods are helpful.

It is less suited to exterior doors that require remote Wi-Fi management out of the box, since the app works only within Bluetooth range unless you add a separate gateway. Buyers needing fully cloud-connected remote control should look at locks with built-in Wi-Fi or an included hub.

Pros & Cons

Pros

• Easy installation and a familiar knob form factor make it a quick DIY upgrade.
• Multiple access methods provide flexibility, including a physical key backup.
• Rechargeable battery with a visual indicator reduces maintenance surprises.
• Local fingerprint storage enhances privacy by avoiding cloud uploads.

Cons

• Some users report inconsistent fingerprint performance, so results can vary by user and environment.
• App control is limited to Bluetooth range unless a separate gateway is purchased for Wi-Fi access.

Specifications

Brand	KLLOQUE
Access methods	Fingerprint, Bluetooth app, physical key
Fingerprint capacity	Up to 20 fingerprints
Battery	Built-in 400mAh rechargeable (about 3 hr charge)
Auto lock	5 second auto locking feature
Modes	Passage, entrance, privacy
Finish	Polished brass

Our Verdict

The Polished Brass Fingerprint Door Lock is a solid interior smart knob for users who want quick keyless entry, simple app management in Bluetooth range, and a physical key backup. Its fast sensor, rechargeable battery and easy installation make it good value for bedrooms and apartments, but buyers who need consistent biometric performance for many users or remote Wi-Fi control should plan for potential limitations or add the optional gateway.

Frequently Asked Questions

Can the app control the lock remotely?
App control works within Bluetooth range; remote Wi-Fi control requires a separately purchased gateway.

How long does the battery last?
The built-in 400mAh battery fully charges in about 3 hours and can last up to 12 months depending on frequency of use; it has a visual power display and a low-battery alarm.

How many fingerprints can it store?
The lock can store up to 20 fingerprints and stores templates locally on the device rather than uploading them to the cloud.