If you’ve been thinking about a smart lock for a while, you’ve probably come across two very similar models from the WELOCK brand. After all, the new WELOCK smart lock SECBN51 and the long-time favorite WELOCK Touch41 offer unlocking via fingerprint, an RFID card, and a mobile app—while right now they’re separated by only a symbolic difference of 3 €. So which one is worth buying?
That’s exactly what we’ll answer in this article. We’ll look at the differences in features, build, and day-to-day use so you can pick the model that fits your home best.
What do WELOCK SECBN51 and Touch41 have in common?
At first glance, these are very similar products. Both models support unlocking with fingerprints, RFID cards, and via the WELOCK app. The memory holds up to 100 fingerprints (including three administrator ones), and you can also add up to 20 RFID cards.
Of course, there’s an OLED display showing the battery status, powered by three AAA batteries with an approximate battery life of 8 to 10 months, plus emergency unlocking via a USB power bank in case the lock is completely out of power. Installation remains one of WELOCK’s biggest advantages—just swap the old latch for the new one in about 10 minutes, with no drilling or any structural modifications.
WELOCK smart lock SECBN51: New model with a richer bundle and more flexibility
The SECBN51 is the latest addition to the manufacturer’s lineup and brings several practical upgrades. The lock supports doors with a thickness of 30 to 70 mm, and the package also includes an extension piece that lets it handle doors up to 100 mm thick.
The manufacturer includes up to three RFID cards, an extended cylindrical latch, screwdrivers, and the necessary mounting accessories. Biometric unlocking with fingerprint recognition in about half a second and high scanner reliability remains a given. The lock has IP54 resistance, protection against electrostatic discharges up to 30,000 V, and a lifetime of up to 10 million openings.
Welock SECBN51
EU warehouse
TIPExpress delivery from a European warehouse without customs duty and VAT.
This product will be delivered to you express from a local warehouse in Europe. Delivery from EU warehouses usually takes 2–10 days and is handled by courier. When it arrives, you won’t pay any additional fees — no customs duty and no VAT.
WELOCK Touch41: A proven classic with higher durability
If you’ve been following our articles for a while, you definitely know Touch41. It’s one of WELOCK’s best-selling models, popular thanks to its easy use and reliable biometric unlocking.
Its big advantage is the higher IP65 rating, so it handles rain and dusty environments better. It can also work at lower temperatures down to -25 °C. Touch41 supports doors with a thickness of 50 to 100 mm, and like SECBN51 it offers app control, RFID cards, and the option to add WIFIBOX3 for remote access and voice control.
WELOCK Smart Lock Touch41, 2-year warranty
EU warehouseTIPExpress delivery from a European warehouse without customs duty and VAT.
This product will be delivered to you express from a local warehouse in Europe. Delivery from EU warehouses usually takes 2–10 days and is handled by courier. When it arrives, you won’t pay any additional fees — no customs duty and no VAT.
Comparison: which model is worth more?
Surprisingly, the biggest differences are in the details. SECBN51 is a better fit for users who need compatibility with thinner doors starting at 30 mm and who appreciate a richer bundle of accessories. It’s also a completely new model that builds on the success of previous generations.
On the other hand, Touch41 builds on years of proven reliability, higher IP65 durability, and better handling of extreme temperatures. If the lock will be more exposed to weather conditions—or if you simply want a model used by thousands of customers across Europe—Touch41 is a very safe choice.
The price difference is minimal—what do we recommend?
The current promotion makes choosing even more interesting. After applying the coupons, the WELOCK smart lock SECBN51 comes out to €129 with coupon code VD60, while the WELOCK Touch41 costs just €126 with coupon code VD63. The difference is only €3, so when deciding, it’s worth focusing more on the features you need than on the price itself.
If you’re buying your first smart lock and you want the widest possible compatibility with different door types, the new WELOCK smart lock SECBN51 is a very interesting choice. It offers a modern design, a richer package, and a practical extension of the cylindrical insert up to 100 mm.
If you prefer a model that’s been proven by thousands of users, the higher IP65 rating and better resistance to bad weather still make WELOCK Touch41 one of the best smart locks in its price category. No matter which one you choose, you’ll get modern key-free unlocking, easy installation, and a noticeably more convenient everyday entry to your home.
Real experiences: Is switching to WELOCK worth it in everyday life?
Paper specs are one thing, but the real picture of the product shows up only with everyday use. With smart locks, you quickly find out whether it’s just an interesting tech novelty or a solution that genuinely makes life easier. Based on our readers’ feedback and our own experience, WELOCK is the kind of product you get used to surprisingly fast. After a few days of use, unlocking with keys starts to feel needlessly complicated.
Long-time user Ladislav has been using WELOCK smart locks since 2017. He values their reliability most, along with fast response and convenience for everyday unlocking. At the same time, he points out one natural feature that applies to practically all biometric locks, regardless of the manufacturer.
“Under normal conditions, unlocking works very reliably and quickly. However, you need to keep in mind that with wet or dirty fingers— or with smaller children whose fingerprints are still developing—biometrics may not always respond on the first attempt.”
That’s exactly why it makes sense to choose models that offer multiple unlocking options. If the fingerprint happens to fail, you can still use an RFID card or a mobile app. And for models with a PIN keypad, you always have another reliable backup option right at hand.
As Ladislav puts it, in most situations he uses fingerprint unlocking. If, however, he comes from the garden, the workshop, or simply has wet hands, he uses another available method without hesitation. This flexibility, in his view, is one of the biggest advantages of WELOCK smart locks.
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