Description
6-in-1 unlock method, smart door lock: fingerprint, passcode, RFID card, Welock app, mechanical key, optional remote release (additional purchases WiFibox3). Up to 10 administrator users, 190 normal users. Users can store: 100 fingerprints or 200 passwords or 199 RFlD cards. App for iOS and Android are available: Welock, smart door lock can be setup and unlocked via app
DIY Install Smart Lock for Euro Cylinder. No need to replace your door. The U81 is a DIY smart lock that fits most European profile cylinders, simply install, screw, and secure in 15 minutes.
Unlock your door with 6-in-1 smart access options:
- Fingerprint (fast & secure)
- PIN code (with anti-peep protection)
- RFID card
- Bluetooth App
- Mechanical key (for emergency backup)
- Alexa voice control (via Wi-Fi gateway)
Whether for your home, Airbnb, office, or rental property—enjoy flexible, keyless access with full peace of mind.
Home Assistant Integration (with WiFiBox3)
Connect U81 to your smart home via WiFiBox3 and control it through Home Assistant, Alexa, or your phone.
Automatic Locking
Auto-locks after closing (7–14 s) and supports customizable delay time for flexible security.
Fits Narrow European Doors
Designed for door edges ≥25 mm — solves the common issue of limited space without drilling or modification.
Wide Compatibility & Strong Performance
Fits wooden, interior, and entrance doors with Euro-profile cylinders.
Tested for 100,000 pressing cycles—built to last.
The silver finish complements modern door aesthetics.
Long Battery Life & Low Voltage Alarm
Powered by 4×AAA batteries (not included).
Enjoy up to 12 months of battery life with typical use.
A low battery alert at 4.5V reminds you to replace it in time
| Brand |
WELOCK |
| Applicable door types |
Wooden doors, interior doors, entrance doors etc |
| Operating Temperature |
-25°C ~ 60°C |
| Pressing Cycle Times |
100,000 times |
| Material of handle |
Stainless steel + PC plastic |
| Way to unlock |
Fingerprint / Passcode / RFID card / APP / Mechanical key |
| Battery Type |
4 × AA batteries (separate purchase) |
| Low voltage alarm |
4.5V |
| Battery Replacement |
Replaceable |
| Color |
Silver |
| Battery Life |
10–12 months |
Remote Control via App & Bluetooth
Simply add the WIFIBOX3 gateway to control your lock through WELOCK App. share guest access, view live access logs, and receive instant notification of any changes to the door status at any time
- Ideal for homes, Airbnb rentals, apartments, offices, and hotels.
Massive Code Versatility
This keyless entry smart lock supports up to 200 PIN codes, 100 fingerprints, and 199 RFID cards. You can assign up to 10 administrators and manage up to 190 regular users—perfect for full access control.
Secure Privacy Protection
In addition to the actual PIN code, this smart fingerprint lock supports entering random digits before or after the correct code, an anti-peep feature that effectively protects your privacy.
Smart Lock U81 with Physical Key
Even if the batteries run out or your phone is lost, you’ll never be locked out. The built-in physical key backup ensures peace of mind.
This smart lock is thoughtfully designed with an emergency key option to meet your everyday security needs.
Unlock Smart Cylinder Lock via Alexa
U81 integrates seamlessly with Alexa (via WIFIBOX3), making it a top choice for smart home lovers.
This Alexa-compatible smart lock lets you unlock the door with your voice.
Perfect for your smart home setup.
DIY Install Smart Lock for Euro Cylinder
No need to replace your door. The U81 is a DIY smart lock that fits most European profile cylinders, simply install, screw, and secure in 15 minutes.
