Introduction
Thank you for choosing the GATEMAN WF-20 Fingerprint Digital Door Lock. This advanced security device offers convenient and reliable access control for your home or office. Please read this manual carefully before installation and operation to ensure proper use and to maximize the lifespan of your lock.
The GATEMAN WF-20 combines fingerprint recognition, PIN code access, and robust security features to provide a secure and user-friendly experience. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting.
Product Features
- Advanced Fingerprint Recognition: Securely unlock your door with registered fingerprints. Supports up to 20 unique fingerprints.
- Customizable PIN Code: Set a user-selectable PIN number ranging from 4 to 12 digits.
- Automatic or Manual Locking: Choose between automatic locking after the door closes or manual locking for greater control.
- Burglar Alarm: An alarm activates upon forced entry detection, enhancing security.
- Fire Detection Sensor: The lock automatically unlocks when temperatures exceed 75°C (167°F) for emergency egress.
- Fake Password Function: Enter random numbers before or after your actual PIN to prevent exposure of your code.
- Voice Guide System: Provides Korean voice prompts for normal operations and programming (selectable for melody/mute).
- Long Battery Life: Powered by 4x AA alkaline batteries, providing approximately 1 year of use (based on 10 uses per day).
- Low Battery Alarm & Emergency Power: Notifies you when batteries are low and includes an external terminal for emergency power.
- Remote Control Compatibility: Designed to allow installation of a remote controller (sold separately).
- Easy Installation: Designed for straightforward installation without requiring drilling or significant door modifications.
- Modern Design: Sleek and contemporary style to complement various home decors.
Setup and Installation
The GATEMAN WF-20 is designed for easy installation. While specific steps may vary slightly depending on your door type, the general process involves replacing your existing door lock. It is recommended to have basic tools such as a screwdriver.
1. Unpacking and Inspection
Carefully unpack all components and verify that all parts are present according to the packing list (not provided in this manual, refer to product packaging). Inspect for any damage during transit.
2. Battery Installation
- Locate the battery cover on the interior unit of the lock.
- Remove the battery cover.
- Insert four (4) new AA alkaline batteries, ensuring correct polarity (+/-).
- Replace the battery cover. The lock will typically emit a sound or light up to indicate power.

Image: GATEMAN WF-20 Digital Door Lock, showing the exterior and interior units. This image illustrates the overall design of the lock, which includes the fingerprint scanner and keypad on the exterior, and the battery compartment on the interior unit.
3. Mounting the Lock
Follow the detailed instructions provided with your physical product for mounting the exterior and interior units, and connecting the necessary cables through the door. Ensure the lock mechanism operates smoothly before securing all screws.
Note: This lock is designed for single door applications and typically replaces standard deadbolt or handle sets. No drilling or modifications to the door are generally required if replacing a compatible lock.
Operating Instructions
1. Initial Setup and Master PIN Registration
Upon first power-up, you will need to register a Master PIN. This PIN is crucial for programming other settings and user access.
- Open the battery cover on the interior unit.
- Press the [Registration] button (usually a small button near the battery compartment).
- On the exterior keypad, enter your desired 4-12 digit Master PIN.
- Press the [*] button to confirm.
- Re-enter the Master PIN and press [*] again to verify.
- A confirmation sound or voice prompt will indicate successful registration.
2. Registering User Fingerprints
The lock can store up to 20 unique fingerprints.
- Open the battery cover and press the [Registration] button.
- Enter your Master PIN followed by the [*] button.
- Follow the voice prompts to select fingerprint registration mode.
- Place your finger on the fingerprint scanner. Lift and place again as prompted (typically 3-5 times) until registration is complete.
- Repeat for additional fingerprints or press [Registration] to exit.
3. Registering User PIN Codes
You can register additional user PIN codes for family members or guests.
- Open the battery cover and press the [Registration] button.
- Enter your Master PIN followed by the [*] button.
- Follow the voice prompts to select PIN code registration mode.
- Enter the desired 4-12 digit user PIN.
- Press the [*] button to confirm.
- Re-enter the user PIN and press [*] again to verify.
- Repeat for additional PINs or press [Registration] to exit.
4. Unlocking the Door
- Using Fingerprint: Place a registered finger on the scanner. The lock will unlock after successful recognition.
- Using PIN Code: Touch the keypad to activate it. Enter your registered PIN code followed by the [*] button. The lock will unlock.
- Fake Password Function: To prevent PIN exposure, you can enter random numbers before or after your actual PIN. For example, [Random Numbers] + [Your PIN] + [Random Numbers] + [*]. The lock will only recognize the correct sequence of your PIN.
5. Locking the Door
- Automatic Locking: If set to automatic mode, the lock will engage automatically a few seconds after the door is closed.
- Manual Locking: If set to manual mode, press the [Lock] button on the exterior unit or turn the thumb-turn on the interior unit to lock the door.
6. Voice/Melody/Mute Settings
Refer to your product's specific instructions for adjusting the voice guide volume or switching between voice, melody, or mute modes. This setting is typically accessed via the [Registration] button and Master PIN.
Maintenance
- Battery Replacement: Replace all four (4) AA alkaline batteries when the low battery alarm sounds. Do not mix old and new batteries, or different types of batteries.
- Cleaning: Wipe the lock's exterior surfaces with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the finish and electronic components.
- Fingerprint Sensor: Keep the fingerprint sensor clean and free of dirt or moisture for optimal performance.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Lock does not respond / No power. | Dead batteries or incorrect battery installation. | Replace all four AA alkaline batteries. Ensure correct polarity. If still unresponsive, use the emergency external battery terminal. |
| Low battery alarm sounds. | Batteries are running low. | Replace all four AA alkaline batteries immediately. |
| Fingerprint not recognized. | Finger is dirty, wet, or improperly placed. Fingerprint not registered. | Ensure finger is clean and dry. Place finger flat on the sensor. Try re-registering the fingerprint. Use PIN code as an alternative. |
| PIN code not working. | Incorrect PIN entered. Keypad not active. | Ensure the keypad is lit before entering the PIN. Verify the correct PIN. Try using the fake password function correctly. |
| Burglar alarm activates. | Forced entry attempt detected. | The alarm is a security feature. Investigate the cause. The alarm will typically reset after a period or upon successful authorized entry. |
| Door does not lock automatically. | Lock is set to manual mode. Door sensor misalignment. | Check lock settings to ensure automatic locking is enabled. Verify the door closes completely and the sensor aligns. |
Specifications
- Model: GATEMAN WF-20 (Part Number: XE-F9JR-GYXR)
- Brand: GATEMAN
- Fingerprint Capacity: Up to 20
- PIN Code Length: 4-12 digits
- Power Source: 4x AA Alkaline Batteries (not included)
- Battery Life: Approximately 1 year (based on 10 uses/day)
- Fire Detection Temperature: Above 75°C (167°F)
- Item Weight: 3.19 pounds (approx. 1.45 kg)
- Package Dimensions: 10.24 x 8.27 x 3.74 inches (approx. 26 x 21 x 9.5 cm)
- Connectivity Protocol: Wi-Fi (for remote control, if installed)
- Control Method: Remote, Voice (Korean voice guide)
- Style: Modern
- UPC: 660960095463
Warranty and Support
Specific warranty details are typically provided with your purchase documentation. Please refer to the warranty card or contact your retailer for information regarding warranty coverage and terms.
For technical support, troubleshooting assistance beyond this manual, or inquiries about replacement parts, please contact GATEMAN customer service or your authorized dealer. Contact information can usually be found on the product packaging or the manufacturer's official website.
Please retain your proof of purchase for warranty claims.






