DESLOC smart door lock, K140 Plus

Key points

A front-door lock can be a simple keyless keypad, or a more connected access system. The DESLOC K140 Plus takes the latter approach, pairing palm-vein recognition with built-in Wi-Fi and app access.

Palm-vein profiles are stored locally, and the lock supports up to 100 profiles and 100 passcodes. That gives a household room to set up access for family and guests without relying on a single shared code.

It also includes two physical keys, auto-lock and alerts. The stated battery life is up to nine months, with a Type-C emergency port for backup power if the battery runs out.

Best use cases

This setup makes most sense for a busy entry where different people need their own way in. For example, you could assign access to a family member, use a passcode for a guest, then check the app after leaving to see whether the bolt is fully engaged. The door sensor reports “Locked” only when the bolt has engaged with the strike plate, rather than simply when the door closes.

It’s a good choice if you want keyless entry plus remote access without adding a separate bridge. The anti-peeping passcode feature lets you enter random digits before or after your code, while scheduled access for children can send an alert if they do not return on time.

Keep in mind that the product details do not give door dimensions or installation-fit information. Check that the lock suits your door before choosing it, those specifics matter more than the number of app features if fit is uncertain.

Tips for day-to-day use

Set up the access methods you will actually use, and keep one of the two physical keys somewhere accessible as a backup. The Type-C emergency port can also supply power from a phone or power bank if the battery is depleted. For charging, the instructions specify a 5V/2A charger and advise against laptops, low-power adapters and worn cables.

The anti-hijacking feature can send an alert when a preset emergency passcode or palm is used. That may be useful when another household member needs a discreet way to signal trouble, though it depends on setting up the relevant preset first. The lock and its battery are both covered by a 24-month warranty, and replacement batteries are available.

A conventional keyed lock may be the simpler fit if you do not need app controls, multiple access profiles or palm recognition. This model’s extra access options are more relevant when you want to manage entry for several people.

Purchase questions

Does it need a separate Wi-Fi bridge? No. Wi-Fi is built in, so the product description says a bridge is not required for remote control.

What happens if the battery runs out? You can use the Type-C emergency port to power the lock with a phone or power bank, or use one of the two physical keys.

How many people can have their own access? It supports up to 100 palm-vein profiles and up to 100 passcodes. The description does not specify other limits on how those credentials can be assigned.

Is it worth it?

The K140 Plus is worth considering if you want a front-door lock that combines palm-vein entry, app-based remote access, passcodes and physical-key backup. Those features offer more ways to manage entry than a basic keypad lock, especially for a household with guests or changing access needs.

It may not suit you if you prefer a straightforward keyed lock or do not expect to use remote controls and individual access settings. The missing door-fit details are also a practical reason to verify compatibility before buying, the feature list cannot answer that question on its own.