Introduction
Thank you for choosing the hiencetec YL-58 Fingerprint Keypad Door Lock. This smart door lock offers multiple unlocking methods including fingerprint, passcode, and physical key, providing enhanced security and convenience for your home, office, or apartment. Please read this manual carefully before installation and operation to ensure proper use and optimal performance.
Product Features
- Advanced Biometric Fingerprint Sensor: High recognition accuracy (up to 99%) with swift reading in 0.25s and unlocking in 1s. Stores up to 20 fingerprints.
- Multiple Unlocking Methods: Fingerprint, Passcode (up to 15), and 2 Physical Keys.
- Enhanced Security: Constructed from durable zinc alloy. Features anti-peeping input for passcodes and an auto-lock function.
- Convenience Modes: Silent Mode for noiseless entry and Passage Mode for temporary unlocked access.
- Easy DIY Installation: Designed for standard US doors (backset 2-3/8" (60 mm) and 2-1/8" (70 mm), door thicknesses 1-3/8'' to 2-1/8'' (35 mm - 55 mm)). No wiring or drilling required.
- Emergency Power & Low Battery Alarm: Operates on 4 AAA batteries for up to 12 months. Alarms with a red light when batteries are low.

Figure 1: Multifunction Overview of the hiencetec YL-58 Door Lock.
Package Contents
Please check that all components are present and in good condition:
- hiencetec YL-58 Fingerprint Keypad Door Lock (Front and Rear Handles)
- Latch Mechanism
- Strike Plate
- Mounting Screws
- 2 Physical Keys
- Installation Hardware
- User Manual
- Screwdriver (often included)
Specifications
| Brand | hiencetec |
| Model Name | YL-58 |
| Lock Type | Key Lock, Keypad |
| Material | Zinc Alloy |
| Dimensions (L x W x H) | 5.8 x 7.2 x 7.2 inches |
| Item Weight | 2.99 pounds |
| Power Source | 4 AAA Batteries (not included) |
| Battery Life | Up to 12 months |
| Fingerprint Capacity | Up to 20 |
| Passcode Capacity | Up to 15 |
| Door Thickness | 1-3/8'' to 2-1/8'' (35 mm - 55 mm) |
| Backset | 2-3/8'' (60 mm) and 2-1/8'' (70 mm) |
| Special Features | Fingerprint, Key Unlock, Passage Mode, Passcode Unlock, Silent Mode |
Setup and Installation
The hiencetec YL-58 lock is designed for easy DIY installation. A screwdriver is typically the only tool required. Ensure your door meets the specified dimensions for thickness and backset.
- Prepare the Door: Ensure your door has the correct bore holes and backset. The lock fits both 2-3/8" (60mm) and 2-1/8" (70mm) backsets. Adjust the latch mechanism if necessary.
- Install the Latch: Insert the latch into the door edge. Ensure the beveled side of the latch faces the outside of the door. Secure it with screws.
- Install the Exterior Handle: Feed the spindle and power cable through the latch and door hole. Position the exterior handle flush against the door.
- Install the Interior Handle: Connect the power cable from the exterior handle to the interior handle. Align the interior handle with the spindle and mounting posts. Secure with screws.
- Install Batteries: Open the battery cover on the interior handle. Insert 4 AAA batteries, ensuring correct polarity. Close the battery cover.
- Test Installation: After installation, test the mechanical operation of the handle and latch before programming.
Video 1: Official installation guide for the hiencetec smart door lock. This video demonstrates the step-by-step process of installing the lock, including preparing the door, installing the latch, and attaching the handles.

Figure 2: Installation dimensions and components for the hiencetec YL-58 lock.
Operating Instructions
1. Initial Setup and Administrator Fingerprint/Passcode
Upon first power-up, the lock will be in factory default mode. You must set an administrator fingerprint or passcode first.
- To Add Administrator Fingerprint: Press the fingerprint sensor. When prompted, place your finger on the sensor multiple times until successful.
- To Add Administrator Passcode: Press any key on the keypad, then enter your desired 6-8 digit passcode followed by '#'. Repeat to confirm.
Note: The first registered fingerprint or passcode will automatically be set as the administrator.
2. Adding User Fingerprints/Passcodes
After setting up the administrator, you can add up to 19 additional user fingerprints and 14 user passcodes.
- To Add User Fingerprint: Activate the lock (e.g., by touching the keypad), then use the administrator fingerprint to enter programming mode. Follow the voice prompts to add new fingerprints.
- To Add User Passcode: Activate the lock, then use the administrator passcode to enter programming mode. Follow the voice prompts to add new passcodes.

Figure 3: The three primary unlocking methods for the hiencetec YL-58 lock.
3. Unlocking the Door
- Fingerprint Unlock: Place a registered finger on the fingerprint sensor. The lock will unlock if the fingerprint is recognized.
- Passcode Unlock: Enter a registered passcode on the keypad, then press '#'. The lock will unlock if the passcode is correct.
- Physical Key Unlock: Insert the physical key into the keyhole and turn to unlock. This is for emergency access.

Figure 4: Visual representation of the three unlocking methods.
4. Locking the Door
The lock will automatically lock after 3 seconds of closing the door. You can also manually lock it by lifting the handle from the outside or inside.

Figure 5: Auto-lock feature for enhanced security.
5. Special Modes
- Silent Mode: To enable or disable silent mode, refer to the programming instructions in the full manual. In silent mode, the lock will not beep when keys are pressed or when unlocking.
- Passage Mode: This mode keeps the door unlocked for continuous access. Ideal for periods when the door needs to remain open or frequently accessed. Refer to the full manual for activation/deactivation steps.
- Anti-Peeping Passcode: When entering your passcode, you can input random numbers before or after your actual passcode to prevent others from guessing it. For example, if your passcode is 123456, you can enter 987123456000.

Figure 6: Anti-peeping passcode input method.
Maintenance
- Battery Replacement: The lock uses 4 AAA batteries. When the batteries are low, the lock will emit 7 beeps and the indicator light will blink red. Replace all four batteries promptly. Do not mix old and new batteries.
- Cleaning: Wipe the lock surface with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the finish or electronic components.
- Fingerprint Sensor Care: Keep the fingerprint sensor clean and dry for optimal performance.

Figure 7: Low battery alarm indicator and replacement instructions.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Lock does not respond. | Dead batteries. | Replace all 4 AAA batteries. |
| Fingerprint not recognized. | Finger is wet/dirty, sensor is dirty, or fingerprint not properly registered. | Ensure finger and sensor are clean and dry. Re-register fingerprint if issue persists. |
| Passcode not working. | Incorrect passcode entered, or passcode not registered. | Verify the passcode. Ensure it was registered correctly. |
| Lock beeps continuously. | Low battery warning. | Replace batteries immediately. |
| Handle is loose after installation. | Screws not tightened sufficiently. | Re-tighten all mounting screws. |
Warranty and Support
hiencetec products are designed for reliability and performance. For specific warranty details, please refer to the warranty card included with your product or contact customer support.
If you encounter any issues or have questions regarding your hiencetec YL-58 Fingerprint Keypad Door Lock, please contact our customer service team. We aim to respond to inquiries within 24 hours.
Customer Service: Refer to the contact information provided in your product packaging or on the official hiencetec website.