WELOCK PCB41 is a keyless entry smart door lock cylinder designed for front gates, short stay rentals, and hotel doors. It replaces only the existing cylinder and keeps the original lock body in place. WELOCK PCB41 Smart Lock, One Keyless Solution, All Door Types. From wooden homes to steel-clad offices, install in 5 mins with DIY yourself. WELOCK smart door locks can be used for all kinds of scenarios, bedroom, AirBnB, hotel, offices, garage, etc. Size and compatibility Handle diameter: outside 46 mm, inside 38 mm. Handle length: outside 56 mm, inside 57 mm. Cylinder length is adjustable: outside 40 mm to 55 mm, inside 30 mm to 60 mm. Distance from the center of the keyhole to the door frame must be 40 mm or more. Suitable door thickness: 50 mm to 100 mm. Installation and power Installs by swapping the lock cylinder only, without drilling or changing the lock body. Typical installation time is about 3 to 5 minutes using the supplied tools. Powered by three AAA batteries. Batteries are not included. If batteries are depleted, the lock can be opened using USB backup power for app unlocking. The USB port is for emergency power only and does not charge batteries. Unlocking methods and access control Five unlocking options: password, RFID card, WELOCK app, temporary password, and USB backup unlock. Supports up to 10 password groups, including one administrator group. Supports up to 20 RFID cards. WELOCK app is available for iOS and Android and can be used to manage users and view unlocking records. Short term access and channel mode Administrator passcode can authorize all users. Up to nine individual passcodes can be set for time limited access and can be changed or removed at any time. Channel mode keeps the cylinder unlocked when enabled. In the box One WELOCK PCB41 smart lock cylinder. Three RFID cards. Two special Allen keys. Quick start guide in five languages. Materials and warranty Materials: stainless steel with zinc alloy and plastic components. Warranty: two years. WE.LOCK is a professional R & D, production and sales in smart lock cylinder, fingerprint and Bluetooth lock cylinder as one of the enterprises, already over 10 years in research and practical experience at this area, and become bio-fingerprint in the lock cylinder. Our lock cylinder suitable for varieties of doors installation and use. provide people more safe and convenient in life. Specifications: Material: Stainless steel and Zinc alloyOperating Temperature: -40 ºF~140 ºF(-20ºC ~ 60ºC)Power Supply: 3 × AAA Battery(not in packing)Cylinder N.W &size:480g(16.9oz)Waterproof Grade: IP65Door Thickness: lock cylinder length is adjustable (50mm to 100mm), match 99% doors in the world.Package List: 1 × Lock cylinder2 × Allen key1 × Page of Installation Guide3 × RFID card

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WELOCK Smart Lock ToucD41, a versatile keyless entry system designed for modern homes and workplaces. It features 6-in-1 unlocking options including fingerprint recognition, PIN code, RFID card, mobile app control, USB emergency power unlock, and optional remote access via the WiFiBox3 gateway (sold separately). This flexibility ensures you always have a reliable way to enter, even in unexpected situations. Designed for multi-user environments, the lock supports up to 10 administrators and 190 standard users, making it ideal for families, rental properties, and offices. It offers generous storage capacity for up to 100 fingerprints, 200 passwords, or 199 RFID cards, allowing personalized access for everyone who needs it. Using the WELOCK app for iOS and Android, you can easily manage users, adjust lock settings, and unlock your door remotely from anywhere. Whether you’re granting access to guests, monitoring entry, or simplifying daily routines, the WELOCK ToucD41 delivers secure, convenient, and intelligent door control in one sleek solution. 6-in-1 Unlock Methods: Fingerprint, PIN code, RFID card, WELOCK app, USB emergency unlock, optional remote unlock (WiFiBox3 sold separately) Large User Capacity: Supports up to 10 administrators and 190 regular users High Storage Capability: Save up to 100 fingerprints, 200 PIN codes, or 199 RFID cards App Control (iOS & Android): Manage users, adjust settings, and unlock remotely via the WELOCK mobile app Flexible Access Management: Easily add or remove users for family, guests, or staff Ideal for Homes & Offices: Secure keyless entry solution for modern living and shared spaces

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WELOCK Touch41 is a smart fingerprint door lock cylinder for home doors, gates, and garage doors. It replaces the existing cylinder without changing the original lock body. Size and compatibility Knob diameter: outside 46 mm, inside 38 mm. Knob length: outside 56 mm, inside 57 mm. Cylinder length adjustable: outside 40 mm to 55 mm, inside 30 mm to 60 mm. Suitable door thickness: 50 mm to 100 mm. Fits European standard cylinder openings. No drilling required for replacement. Unlocking methods and capacity Four unlocking options: fingerprint, RFID card, WELOCK app (Bluetooth or Wi-Fi connection via compatible setup), and USB backup power unlock. Stores up to 100 fingerprints, including up to 3 administrator fingerprints. Supports pairing up to 20 RFID cards. WELOCK app is available for iOS and Android for user management and unlocking records. USB port is for emergency unlocking power only and does not charge batteries. Fingerprint operation notes After installation, set an administrator fingerprint first. Before admin setup, the lock is in factory mode and any fingerprint or paired method may unlock. Initial free rotation of the handle before receiving an unlocking command is normal. Power and battery alerts Powered by three AAA 1.5 V batteries (not included). With about ten unlocks per day, expected battery life is approximately 8 to 10 months. When battery level drops below 20%, the lock gives an audible warning and the keypad lights red. OLED display shows battery status, settings, and warnings. Safety and durability Electrostatic protection up to 30,000 V. IP65 splash resistance for covered outdoor doors. Not intended for fully exposed external garden gates. Can always be opened from the inside in emergencies such as fire. Tested for up to 10 million closing operations. Operating temperature: -25°C to 60°C. Installation notes Lock is installed from the front door side. The front lock section is not removable. If access is shared through the app, the authorized person needs the WELOCK app to unlock via the app. In the box One WELOCK Touch41 electronic lock cylinder. Three RFID cards. Two special Allen keys. Instruction manual. Materials and warranty Materials: stainless steel with zinc alloy and plastic components. Warranty: two years.

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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 LockingAuto-locks after closing (7–14 s) and supports customizable delay time for flexible security.Fits Narrow European DoorsDesigned for door edges ≥25 mm — solves the common issue of limited space without drilling or modification. Wide Compatibility & Strong PerformanceFits 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 AlarmPowered 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.

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Smart Home Integration: Manage your WELOCK smart lock from anywhere with Alexa integration for seamless remote unlocking and a smart home experience. One WIFIBOX3 gateway can support up to 8 WELOCK electronic locks. New Generation for Remote Unlocking: The enhanced gateway antenna provides better Bluetooth signals for remote unlocking. Grant access to handymen, dog sitters, or delivery personnel even when you're away. Easy Gateway Setup: The WIFIBOX3 offers simple connection options via Type-C data cable and RJ45 network cable. Enjoy reliable low-power Bluetooth connectivity with a range of up to 10 meters (no wall blocks).Simple setup in under 3 minutes, with USB cable, network cable, and tools included for convenience. 24/7 Home Access Control: Monitor who enters and leaves your home, whether you’re at work, traveling, or on vacation.  Make your intercom smarterWELOCK WIFIBOX3 makes your intercom smart and opens your door conveniently via smartphone. In combination with the WELOCK Smart Lock, you will experience a completely keyless everyday life. Remote control to unlock and monitoringWELOCK WIFIBOX3 smart remotely controls unlocking and checks if whether your door is open or closed. WELOCK Wifibox3 functions:Remote unlockingUnlocking recordsRemote addition/removal of cards (via card QR code)Remote deletion of cards (via card number)Remote deletion of fingerprints (via the fingerprint number)Add/delete passcode

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