Newisdomake NM-8900PG
Newisdomake NM-8900PG Fingerprint Padlock User Manual
Introduction
Thank you for choosing the Newisdomake NM-8900PG Fingerprint Padlock. This manual provides essential information for the safe and efficient operation of your device. Please read it thoroughly before use to ensure proper setup and functionality.
Product Overview
The Newisdomake NM-8900PG Fingerprint Padlock offers a keyless and password-free security solution. Your finger acts as the key, providing quick and convenient access. This padlock is designed for versatility and durability, suitable for various applications.

Image: The Newisdomake NM-8900PG Fingerprint Padlock, highlighting its keyless operation via fingerprint and optional smartphone app control.
Key Features:
- Fingerprint Recognition: Unlocks in approximately 0.5 seconds. Stores up to 20 unique fingerprints.
- USB Rechargeable: Built-in Lithium Ion battery provides over 2,000 unlocks per full charge.
- Durable Construction: Made from environmental Zinc Alloy, offering anti-rust and anti-cracking properties.
- Emergency Options: Features a USB backup key option for emergency unlocking.
- Wide Application: Suitable for suitcases, lockers, bags, bicycles, and more.

Image: Visual representation of the padlock's convenient features: USB charging, low battery alerts, and optional app control.
Setup
1. Initial Charging
Before first use, fully charge the padlock using the provided USB cable. Connect the cable to the padlock's USB port and a standard USB power source (e.g., computer, wall adapter). The indicator light will show charging status and turn off when fully charged.
2. Registering the Administrator Fingerprint
- When the padlock is new or reset, any fingerprint can unlock it. This allows for initial setup.
- To register the first (administrator) fingerprint, press and hold the fingerprint sensor until the blue light flashes.
- Place your finger on the sensor. Lift and repeat 5-10 times, rotating your finger slightly each time to capture different angles of your fingerprint. The blue light will flash, then turn green upon successful registration.
- The first registered fingerprint is automatically designated as the administrator. This fingerprint is required to add or delete other user fingerprints.
3. Registering Additional User Fingerprints (Up to 20)
- Unlock the padlock using the administrator fingerprint.
- While unlocked, press and hold the fingerprint sensor until the blue light flashes.
- Place the administrator's finger on the sensor. Once recognized (green light), the blue light will flash again, indicating it's ready for a new fingerprint.
- Have the new user place their finger on the sensor. Lift and repeat 5-10 times, rotating the finger slightly. The blue light will flash, then turn green upon successful registration.
- Repeat for all desired user fingerprints.

Image: Guide on how to achieve optimal fingerprint recognition by recording your finger from various angles during setup.
Operating Instructions
Unlocking the Padlock
To unlock, simply place a registered finger on the fingerprint sensor. The padlock will unlock in approximately 0.5 seconds if the fingerprint is recognized.
Locking the Padlock
To lock, simply close the shackle. The padlock will automatically lock.
Low Battery Indication and Charging
When the battery is low, the red light will flash after unlocking. This indicates that the padlock needs to be charged soon. Connect the padlock to a USB power source using the provided cable. You can use a portable power bank for convenient charging.
Emergency Unlocking
In case of a completely drained battery or other issues, a USB backup key option is available. Refer to the product packaging or manufacturer's website for specific instructions on utilizing this feature.
App Control (If Applicable)
The padlock may support app control via Bluetooth. If an app is available, download it from your device's app store and follow the in-app instructions to pair and control your padlock. Note: App functionality and availability may vary.

Image: Examples of the Newisdomake fingerprint padlock being used for different applications, including handbags, lockers, bicycles, and doors.
Maintenance
Charging
Ensure the padlock is charged regularly, especially when the low battery indicator appears. Avoid completely draining the battery for extended periods to prolong its lifespan.
Cleaning
Wipe the padlock with a soft, dry cloth. Do not use abrasive cleaners or solvents, as these can damage the finish or internal components. Keep the fingerprint sensor clean and free of dirt or moisture for optimal performance.
Durability
The padlock is constructed from Zinc Alloy, providing resistance against rust and cracking. While durable, avoid exposing it to extreme temperatures or harsh chemicals to maintain its integrity.

Image: The padlock's robust zinc alloy construction, emphasizing its resistance to rust and physical damage.
Troubleshooting
Fingerprint Not Recognized
- Ensure your finger is clean and dry.
- Try different angles or positions of your registered finger on the sensor.
- If recognition consistently fails, try re-registering your fingerprint, ensuring you capture multiple angles during the process.
- Ensure the fingerprint sensor is clean and free of debris.
Padlock Not Responding
- Check the battery level. If the red light flashes or the padlock is unresponsive, it may need charging.
- Connect the padlock to a USB power source and allow it to charge for at least 30 minutes before attempting to use it again.
- If the padlock is completely unresponsive, use the USB backup key option if available.
Cannot Add New Fingerprints
- Ensure you are using the administrator fingerprint to authorize the addition of new fingerprints.
- Verify that you have not reached the maximum limit of 20 registered fingerprints.
Resetting the Padlock
To reset the padlock to factory settings (deleting all registered fingerprints), locate the reset button (often a small pinhole). Use a thin object (like a paperclip) to press and hold the reset button for several seconds until the indicator light confirms the reset. After a reset, any fingerprint can unlock the padlock until a new administrator fingerprint is registered.
Specifications
| Feature | Detail |
|---|---|
| Brand | Newisdomake |
| Model Name | NM-8900PG |
| Lock Type | Biometric (Fingerprint) |
| Material | Zinc Alloy |
| Dimensions (L x W x H) | 3.58 x 1.73 x 0.86 inches |
| Item Weight | 3.2 ounces |
| Battery Type | 1 Lithium Ion (included) |
| Fingerprint Capacity | Up to 20 |
| Special Features | Fingerprint, Portable, Rechargeable |
| Recommended Uses | Luggage, Bookcase, Suitcase, Backpack, Bike, School Locker, Gym Locker |

Image: Detailed dimensions of the Newisdomake NM-8900PG Fingerprint Padlock.
Warranty and Support
Newisdomake is committed to providing quality products and customer satisfaction. If you encounter any issues with your NM-8900PG Fingerprint Padlock, require troubleshooting assistance, or have technical questions, please do not hesitate to contact our customer service team. We are dedicated to ensuring you receive the best possible support.
For warranty information and customer support, please refer to the contact details provided with your product packaging or visit the official Newisdomake website.