1. Introduction
The eLinkSmart YL-P15BF is a heavy-duty smart padlock designed for enhanced security and convenience. It offers multiple unlocking methods, including fingerprint recognition, a 9-digit button password, Bluetooth app control, and traditional backup keys. Its robust, weatherproof design makes it suitable for various indoor and outdoor applications.
2. Product Features
- Multiple Unlocking Methods: Unlock using fingerprint (up to 100), 9-digit button password (up to 20 groups), Bluetooth app, or physical backup keys.
- Remote Authorization: Grant temporary or scheduled access to others via the mobile application.
- Anti-Peep & Temporary Code: Supports one-time codes, sub-account passwords, and anti-peep passwords for enhanced privacy.
- Military-Grade Durability: Constructed with hardened 0.8cm stainless steel shackle and solid zinc-alloy body, resistant to cutting, prying, and hammering.
- IP67 Weatherproof: Designed to withstand various weather conditions, including rain and extreme temperatures (-4°F to 113°F).
- Extended Battery Life: 500mAh battery provides up to 24 months or 8,000 unlocks on a single charge, with USB-C recharging and low battery alerts.
3. Package Contents
Upon unboxing, please ensure all the following items are included:
- 1 x eLinkSmart Fingerprint Padlock (Model: YL-P15BF)
- 1 x USB-C Charge Cable
- 2 x Physical Keys
- 1 x User's Manual

4. Setup and Initial Use
4.1 Charging the Padlock
Before first use, fully charge the padlock using the provided USB-C cable. Connect the cable to the USB-C port located at the bottom of the padlock and to a standard USB power source. The battery indicator lights will show charging status.

4.2 App Installation and Pairing
- Download the eLinkSmart app from your smartphone's app store.
- Open the app and create an account.
- Follow the in-app instructions to pair your padlock via Bluetooth. Ensure the padlock is awake (touch the fingerprint sensor or press a button).
4.3 Registering Fingerprints and Passcodes
Once paired with the app, you can register administrator and user fingerprints, as well as custom passcodes.
- Fingerprint Registration: In the app, navigate to 'Fingerprint Management'. Follow the prompts to add new fingerprints by repeatedly placing your finger on the sensor at different angles until registration is complete.
- Passcode Registration: In the app, go to 'Password Management' to set up your 9-digit button password. You can create up to 20 different passcodes.

5. Operating Instructions
5.1 Unlocking with Fingerprint
Place a registered finger on the fingerprint sensor. The padlock will unlock within 0.5 seconds if the fingerprint is recognized.
5.2 Unlocking with Button Password
Enter your registered 9-digit password using the keypad. Press the unlock button (usually a 'U' or similar symbol) to confirm and unlock.
5.3 Unlocking with Mobile App
Open the eLinkSmart app on your smartphone. Ensure Bluetooth is enabled and the padlock is within range. Tap the 'Unlock' icon in the app to remotely unlock the padlock.
5.4 Unlocking with Physical Key
In case of battery depletion or electronic malfunction, use one of the provided physical keys. Insert the key into the keyhole located at the bottom of the padlock and turn to unlock.

6. Advanced App Features
- Authorization Management: Grant temporary or scheduled access to family, delivery drivers, or colleagues from anywhere.
- Generate Temporary Password: Create one-time or time-limited passwords for guests or specific deliveries.
- History Record: Review a full unlock history, including user name, time, and method of access.
- Anti-Peep Passwords: Add random digits before or after your real code to prevent others from guessing your password.

7. Maintenance
- Regular Charging: Recharge the padlock when the low battery alert is displayed in the app or on the device.
- Keep Sensor Clean: Ensure the fingerprint sensor and keypad are clean for optimal performance, especially in dirty environments.
- Firmware Updates: Periodically check the eLinkSmart app for any available firmware updates to ensure the best performance and security.

8. Specifications
| Feature | Detail |
|---|---|
| Brand | eLinkSmart |
| Model Number | YL-P15BF |
| Lock Type | Biometric |
| Unlocking Methods | Fingerprint, 9-Digit Button Password, Bluetooth App, Physical Key |
| Fingerprint Capacity | Up to 100 |
| Password Groups | Up to 20 |
| App User Capacity | 1 Admin, 1000+ Users |
| Battery Life | Up to 24 months / 8,000 unlocks |
| Charging Port | USB-C |
| Weather Resistance | IP67 Waterproof, Weatherproof (-4°F ~ 113°F) |
| Shackle Material | Hardened Stainless Steel (0.8cm thick) |
| Body Material | Solid Zinc-Alloy |
| Dimensions (Body) | 7.3 x 6.7 x 3.0 CM (2.87 x 2.63 x 1.18 inches) |
| Weight | 0.322 kg (1.14 lbs) |
9. Troubleshooting
- Padlock not unlocking with fingerprint: Ensure your finger is clean and dry. Try re-registering your fingerprint in the app.
- Padlock not responding: Check the battery level. If low, recharge the padlock. Use the physical backup keys if the battery is completely depleted.
- App connectivity issues: Ensure Bluetooth is enabled on your phone and the padlock is within range. Restart the app or your phone if necessary.
- Forgotten password: Use a registered fingerprint, the mobile app, or a physical key to unlock. You can reset or manage passwords via the app.
10. Warranty and Support
eLinkSmart provides a 24-month service period for this product. For any issues, technical support, or warranty claims, please refer to the contact information provided in your product packaging or visit the official eLinkSmart website.