Geek Smart L-B201
Geek Smart Fingerprint Door Lock (Model L-B201) Instruction Manual
Biometric Door Knob Keyless Entry Lock with Handle
Product Overview
The Geek Smart Fingerprint Door Lock (Model L-B201) offers a secure and convenient keyless entry solution for various indoor applications. This biometric door knob allows you to lock and unlock your door with a simple fingerprint scan, eliminating the need for traditional keys or complex codes. Designed for ease of use and quick access, it's an ideal choice for homes, apartments, offices, and hotels.

Figure 1: Main view of the Geek Smart Fingerprint Door Lock.
Key Features
- One-Touch Fingerprint Unlock: Lock and unlock your door in a single motion by scanning your fingerprint. Lightning-fast recognition in less than 0.1 seconds.
- Keyless Entry: Eliminates the need for physical keys, offering enhanced convenience and security.
- Voice Prompts: Guides users through setup and operation for a seamless experience.
- Multiple User Capacity: Supports up to 20 unique fingerprints, including 2 admin-user fingerprints for management.
- Long Battery Life: Powered by 4 AAA batteries, providing approximately 12 months of operation.
- Emergency Power: Features a Micro USB port for emergency charging if batteries run out, ensuring you're never locked out.
- Adjustable Latch: Fits standard door thicknesses from 1-3/8'' to 2-1/8'' (35 to 55mm) with an adjustable latch (2-3/8'' or 2-3/4'').
- Ambidextrous Design: Suitable for both left and right-handed doors.
Package Contents
Upon opening the package, ensure all the following components are present:
- Geek Smart Fingerprint Door Handle (Exterior Panel)
- Interior Panel
- Latch
- Strike Plate
- Mounting Screws (various sizes)
- Mechanical Keys (2)
- Micro USB Charging Cable
- User Manual
- Rubber Gaskets

Figure 2: All components included in the package.
Installation Guide
Follow these steps to install your Geek Smart Fingerprint Door Lock. Ensure your door thickness is between 1-3/8'' to 2-1/8'' (35-55mm).
- Prepare the Door: Remove your existing door knob. Ensure the door hole and edge are clean and free of debris.
- Install the Latch: Insert the latch into the door edge. Adjust the latch length if necessary (60mm or 70mm) by twisting the mechanism. Secure it with the provided screws.
- Install Exterior Handle: Slide the exterior handle through the door hole, ensuring the spindle passes through the latch. Connect the ribbon cable from the exterior handle to the interior panel.
- Install Interior Panel: Align the interior panel with the exterior handle, ensuring the spindle and mounting posts are correctly seated. Secure with the long screws.
- Insert Batteries: Unscrew the battery cover on the interior panel. Insert 4 AAA batteries, ensuring correct polarity. Replace the battery cover.

Figure 3: Visual guide for the installation process.
Installation Video
Video 1: Detailed setup and demo of the Geek Smart L-B201 Fingerprint Door Handle.
Operating Instructions
1. Adding Fingerprints (Admin & Normal Users)
The first two fingerprints registered will automatically be designated as Admin fingerprints. Subsequent fingerprints will be normal users.
- Locate the reset button on the interior panel (small hole next to the setting button).
- Use the provided reset pin (or a paperclip) to press and hold the reset button until you hear a voice prompt "Add administrator fingerprint".
- Place your finger on the fingerprint reader. The lock will prompt you to place your finger multiple times (usually 6 times) to ensure accurate registration. Follow the voice prompts.
- Once successfully registered, you will hear "Addition successful".
- To add normal users after 2 admin fingerprints are set, press the reset button. The lock will prompt "Please place your finger". Follow the same steps as above.

Figure 4: The fingerprint recognition process is quick and accurate.
2. Unlocking and Locking
- Unlocking with Fingerprint: Simply place your registered finger on the fingerprint reader. The lock will unlock in less than 0.1 seconds.
- Locking Automatically: The lock is designed to automatically lock after 5 seconds of being unlocked.
- Using Mechanical Key: In case of emergency or preference, insert the mechanical key into the keyhole on the exterior handle and turn to unlock.

Figure 5: The lock supports both fingerprint and mechanical key unlocking.
3. Passage Mode
Passage mode allows the door to remain unlocked for continuous access without requiring a fingerprint scan for each entry.
- Enable Passage Mode: Press the setting button on the interior panel once. The lock will announce "Passage Mode".
- Disable Passage Mode: Press the setting button again. The lock will announce "Lock Mode" and will resume automatic locking.
Battery and Emergency Charging
The lock is powered by 4 AAA batteries, providing long-lasting performance. In case of low battery or complete power loss, an emergency charging option is available.
- Low Battery Alert: The lock will provide voice prompts and a flashing light when the battery is low, indicating it's time for replacement.
- Emergency Micro USB Port: A Micro USB port is located on the exterior handle. Connect a power bank or a Micro USB cable to provide temporary power for emergency unlocking.

Figure 6: Emergency Micro USB port for temporary power.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Fingerprint not recognized. | Finger is wet, dirty, or improperly placed. Fingerprint not registered. | Ensure finger is clean and dry. Place finger firmly and completely on the reader. Re-register fingerprint if necessary. |
| Lock does not respond. | Batteries are dead or low. | Replace 4 AAA batteries. Use Micro USB emergency power if locked out. |
| Cannot add new fingerprints. | Admin fingerprints not set or maximum users reached. | Ensure 2 admin fingerprints are registered first. If 20 fingerprints are registered, delete existing ones to add new. |
| Door handle is loose. | Mounting screws are loose. | Tighten the mounting screws on the interior panel. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Geek Smart |
| Model Number | L-B201 |
| Material | Aluminum |
| Color | Matte Black |
| Lock Type | Biometric |
| Fingerprint Capacity | Up to 20 (2 Admin, 18 Normal) |
| Recognition Speed | Less than 0.1 seconds |
| Power Source | 4 x AAA Batteries |
| Battery Life | Approx. 12 months |
| Emergency Power | Micro USB Port |
| Door Thickness | 1-3/8'' to 2-1/8'' (35-55mm) |
| Adjustable Latch | 2-3/8'' (60mm) or 2-3/4'' (70mm) |
| Hand Orientation | Ambidextrous |
Warranty and Support
Geek Smart provides customer service for their smart door lock. For any installation or technical issues, please contact them directly.
- Customer Service: Geek Technology Co.
- Phone: 1-844-801-8880 (862) 352-0406
- Email: customercare@geektechnology.com
- Website: www.geektechnology.com
- Operating Hours: Monday-Friday 9:00 AM - 5:00 PM (PST)
Please refer to the warranty card included in your package for detailed warranty terms and conditions.
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