Smarter Security for Modern Homes
As smart home technology continues to evolve in 2025, homeowners are looking for ways to make their homes safer, more convenient, and more connected.
The WELOCK Smart Lock SECBN51 Cylinder is a perfect example of how advanced engineering and everyday practicality can come together to redefine home security.
This innovative smart lock gives you complete control over your door access — no traditional keys required.
With multiple unlocking methods including fingerprint, Bluetooth, and smartphone app control, it provides flexibility for families, landlords, and Airbnb hosts alike.
Through the WELOCK app, users can monitor entry history, manage multiple users.
For those who want hands-free convenience, the SECBN51 can also integrate with Amazon Alexa or Home Assistant — when connected with the WIFIBOX3 accessory.
Built for reliability and designed for modern living, the WELOCK Smart Lock SECBN51 Cylinder is one of the smartest ways to protect your home in 2025.
Universal Door Compatibility and Easy Installation
Before investing in a smart lock, it’s essential to ensure it fits your door.
The WELOCK Smart Lock SECBN51 Cylinder is designed for European-style doors, using a standard Euro-profile cylinder.
It’s adjustable from 30-70 mm, meaning it fits most doors found in homes, apartments, and offices.
Installation takes only minutes — no drilling, wiring, or professional tools required.
Simply replace your existing cylinder with the SECBN51 using a standard screwdriver.
This user-friendly process makes it suitable for both homeowners and renters who want a quick upgrade.
The durable aluminum alloy construction provides weather resistance and long-term durability, ensuring the lock performs well both indoors and outdoors.
Its compact, modern design also complements contemporary home aesthetics without looking bulky or industrial.
Whether your door opens left or right, the WELOCK Smart Lock SECBN51 Cylinder offers smooth, adaptable installation for a perfect fit every time.
Multiple Ways to Unlock — Your Choice, Your Security
The WELOCK Smart Lock SECBN51 Cylinder gives you several access methods tailored to your lifestyle:
- Fingerprint recognition — Unlock in less than one second with your unique fingerprint.
- WELOCK app control — Manage access remotely and share virtual keys.
- Bluetooth access — Connect directly from your phone without needing Wi-Fi.
- RFID card unlocking — Convenient for family members or guests.
Each access mode is secured using AES 128-bit encryption, ensuring your data and entry points remain private and protected.
Whether you want advanced fingerprint access or prefer the simplicity of Bluetooth control, the WELOCK Smart Lock SECBN51 Cylinder gives you the flexibility you need with unmatched peace of mind.
Battery Life, Backup Power, and Emergency Access
Power reliability is critical when it comes to smart locks, and the WELOCK Smart Lock SECBN51 Cylinder delivers dependable performance.
It operates on three AAA batteries, providing up to 8,000 unlocks — or roughly one year of everyday use.
When batteries run low, you’ll receive a warning via the WELOCK app and LED indicators on the lock itself.
If power is completely drained, you can still unlock your door using the USB-C emergency power port with a portable power bank.
This combination of smart alerts, backup power, and manual access means you’ll never be locked out of your home — no matter what.
The SECBN51’s thoughtful design puts reliability first, giving users complete confidence in their home’s security.
Smart Home Integration with WIFIBOX3
The WELOCK Smart Lock SECBN51 Cylinder works perfectly as a standalone Bluetooth lock.
However, when paired with the WIFIBOX3, it transforms into a full-featured smart home device.
Connecting through the WIFIBOX3 enables remote access and voice commands through Alexa and Home Assistant.
You can check door status, lock or unlock remotely, and integrate it with other smart home systems for automated routines.
It’s important to note that these smart integrations require the WIFIBOX3 accessory for Wi-Fi and voice assistant compatibility.
This setup ensures secure, encrypted communication between your lock and smart home devices.
For users who want complete remote control and automation, pairing the WELOCK Smart Lock SECBN51 Cylinder with the WIFIBOX3 is the best way to experience next-level connectivity.
Special Offer — Save Up to €50 in 2025
For a limited time, you can upgrade your home security and save money with this exclusive offer.
The WELOCK Smart Lock SECBN51 Cylinder is now available with up to €50 off using coupon “VD50”, bringing the final price to €139.
All orders ship from the European warehouse and include a 2-year warranty, ensuring quick delivery and reliable after-sales support.
With its advanced fingerprint access, multiple unlocking methods, long-lasting battery life, and easy installation, the WELOCK Smart Lock SECBN51 Cylinder delivers exceptional value for its price.
Don’t miss the chance to experience the future of home security — smart, stylish, and built to last.
Upgrade today and discover why more homeowners across Europe are choosing WELOCK for peace of mind in 2025.
