DESLOC D212 Knob Lock Review: Fast and Convenient Day to Day, Just Not Guaranteed to Stay That Way

Item dimensions L x W x H

6.22 x 2.95 x 1.08 inches

Material

Aluminum

Color

Nickel

Special Feature

Anti-Drill, Anti-Peeping Password, Auto-Lock, Back-Lit Keypad, Battery Indicator, Weather Resistant, Fingerprint, Touchs

Control Method

App, Remote, Touch, Voice

Connectivity Protocol

Bluetooth, Wi-Fi

1. Fingerprint unlock with data stored locally on the device rather than in the cloud, which DESLOC positions as a privacy safeguard.
2. Built-in WiFi lets the companion app lock or unlock the door remotely, view activity logs, and generate temporary passcodes for guests or contractors without needing a separate hub.
3. Adjustable auto-lock timing from 5 to 120 seconds so the door secures itself after you pass through, removing the need to remember to lock up.
4. Four unlock methods - fingerprint, passcode, app, and two included mechanical keys - give a fallback if one method fails.
5. Aluminum alloy body with a tempered glass keypad and IPX4 weather resistance, aimed at better daily durability than the plastic bodies common on budget keypad locks.
6. BHMA Grade 3 certification and anti-drill, anti-peeping password features for baseline residential security on interior and light-duty exterior doors.

Based on

The manufacturer's published specifications and the product's live Amazon listing.

Owner rating

4.4 out of 5 on Amazon, recorded October 30, 2026

Compared against

eufy Security Smart Lock C220, Philips Wi-Fi Front Lock Set, Smart Door Lock with Knob, GHome Smart Fingerprint Door Lock, on what their Amazon listings state and, where owners compared them, what those owners say.

How we score

We score each thing that comes up most in owner feedback on the DESLOC D212 Fingerprint Door Knob Lock. Eight things come up most in owner feedback: seven draw praise and one splits opinion. Its ratings average 4.4 stars (71% five stars, 14% four, 6% three and 9% one or two), so every score starts at 88, that average on a 100 point scale. Where opinion is split, we take off 6. Where it draws mostly complaints, we take off 12. Then we read seven owner reviews in full, including the critical ones, and move the score up to 5 points either way depending on how the owners who mention it rated the product. Our overall score starts from the same 4.4 star average and loses 0.1 for each thing that draws mostly complaints, with 0.1 more when at least a tenth of ratings are one star, never more than 0.3 in all. Nothing comes off here, so it stays at 4.4. Read our editorial standards

Feedback skews strongly positive on the fundamentals: installation is widely described as easy, and the fingerprint scanner is generally called quick and convenient for everyday entry. One buyer reports the fingerprint reader and auto-lock mechanism becoming unreliable after a couple of months, sometimes requiring the backup key, an account that stands apart from the broadly positive day-to-day feedback. The included manual draws mixed comments, with several buyers wishing it were better.

Based on 399 Amazon customer ratings, averaging 4.4 out of 5, recorded 25 October 2026. See the reviews on Amazon

1. Confirm door compatibility before ordering extras

   Check that your door is a standard side-entry door suited to a knob-style lock, since the D212 is designed to replace an existing knob rather than fit a deadbolt-style bore. Measuring your existing knob's backset and door thickness against the included mounting plate avoids a mismatch discovered mid-installation.

2. Remove the old knob and fit the mounting plate

   Use a screwdriver to remove the existing knob and attach the DESLOC mounting plate, latch, and strike plate using the included screws.

3. Install batteries and power on the lock

   Watch the battery indicator during setup to confirm it reads full before proceeding.

4. Enroll fingerprints and set a backup passcode

   Enroll each household member's fingerprint through the keypad, then immediately set a backup passcode and test both mechanical keys. Doing this before daily use begins ensures a fallback is confirmed working in case a fingerprint ever fails to register, which can happen.

5. Connect WiFi and pair the app

   Open the DESLOC app, follow the pairing steps to connect the lock to your home WiFi, and confirm remote lock/unlock and activity logging work from a phone before relying on it. Testing remote access while still standing at the door lets you revert to the physical keypad immediately if pairing fails.

6. Set the auto-lock delay to suit the door

   Choose an auto-lock delay between 5 and 120 seconds based on how the door is used - a shorter delay suits a door passed through quickly, a longer one suits doors where hands are often full. This is an adjustable setting, not a fixed one, so it is worth revisiting if the door ever locks before you're clear of it.