Smart Fingerprint Padlock, Keyless Bluetooth Lock with App Control, Rechargeable IPX5 Waterproof Outdoor Lock - FMP003

ULS3 Silver Fingerprint Pad Lock – Smart Biometric Lock with Tuya App Control

★★★★★ 4.8 out of 5 | 2,300+ Ratings

Model: ULS3 | Color: Silver | Material: Zinc Alloy + Stainless Steel

Key Highlights: 🔓 Fingerprint Unlock 📱 Tuya App Control 🔋 120-Day Standby 🔵 Bluetooth 5.1 👆 20 Fingerprint Capacity

Are you tired of searching for keys or trying to remember a 4-digit combination while you are in a hurry at the gym or airport? The days of traditional locks are over. Meet the ULS3 Silver Fingerprint Pad Lock—a compact, high-tech access solution that fits in the palm of your hand.

Whether you need to secure a locker, luggage, or a bag, the ULS3 offers quick access with just the touch of a finger. In this review, we'll dive into the specs, features, and setup process to see if this is the right smart travel companion for you.

Product Specifications

Specification	Details
Model	ULS3
Material	Zinc Alloy + Stainless Steel
Color	Silver
Dimension	φ25.5 × 75 MM
Unlocking Methods	Fingerprint (Biometric) & Tuya App
Fingerprint Capacity	20 Fingerprints
Bluetooth Standard	Bluetooth 5.1
Supported OS	Android 4.4+ / iOS 7.0+
Power Supply	Built-in 120mAh Lithium Battery
Standby Time	120 Days
Charging Voltage (USB Port)	5V (Do not use fast-charging power sources)
Charging Current	100mA
Low Battery Alert Voltage	3.5V (Red light flashes after unlocking)
Voltage Range	3.3V – 4.2V
Standby Current	30μA
Operating Current	<300mA
Operating Temperature	-20°C to 70°C
Usage Range	Locker, Luggage, Bag, Gym, Travel

Build Quality and Materials

The ULS3 isn't just about tech; it's built with robust materials. The Zinc Alloy body offers a solid feel and resilience against daily bumps, while the Stainless Steel shackle is designed for general security needs. Since it operates via Bluetooth and biometrics, there is no keyhole to worry about, which removes the risk of losing keys or having a key break inside the lock.

Battery Life & Charging

One of the standout features is the impressive 120-day standby time.

🔋 Low Battery Alert: The lock is designed to warn you proactively. When the voltage drops to 3.5V, the red light will flash after unlocking, signaling it's time to recharge.

🔌 Charging: Simply plug it into any standard USB-A port. Important: The manual explicitly states to avoid fast-charging power sources (must be 5V/100mA) to maintain the health of the battery.

How to Set Up the ULS3 (Step-by-Step Guide)

Step 1: Download the App

Scan the QR code in the manual or search for "Tuya Smart" in the Apple App Store or Google Play Store.

Compatibility: Android 4.4+ / iOS 7.0+

Step 2: Register & Connect

1. Open the Tuya App and create an account.
2. Ensure your phone's Bluetooth is turned on.
3. Press the fingerprint sensor on the lock to "wake it up."
4. Tap "Add Device" in the App. The ULS3 should pop up automatically. Tap "Add" to pair via Bluetooth 5.1.

Step 3: Enroll Your Fingerprint

1. Once connected, go to the device settings in the app.
2. Select "Fingerprint Management."
3. Follow the prompts to press your finger on the sensor multiple times until the app confirms 100% enrollment.
4. You can store up to 20 fingerprints, allowing you to register multiple fingers or share access with family members.

Step 4: Unlocking

• Fingerprint: Place your enrolled finger firmly on the sensor for a quick response. The lock will click open immediately.
• App Unlock: Open the Tuya app, select the lock, and press the unlock button.

What's in the Box?

🔒

1x ULS3 Smart Padlock

🔌

1x USB Charging Cable

(Wall adapter not included)

📖

1x User Manual

(English)

🎗️

1x Lanyard / Strap

(Optional accessory)

Frequently Asked Questions (FAQ)

Q: Can I use the ULS3 for outdoor activities? ▼

A: The ULS3 is designed with solid-state electronics and a sealed body, making it suitable for general outdoor use and travel. The operating temperature range of -20°C to 70°C allows it to function in most environments, though it is primarily recommended for lockers, luggage, and bags.

Q: How long does the battery actually last? ▼

A: On standby, the lock can last up to 120 days. However, if you are unlocking it 10-15 times a day, you will likely need to charge it approximately once a month. Charging takes about 1 to 2 hours.

Q: Can I use a fast charger (like my iPhone or Samsung fast charger)? ▼

A: No. You must use a standard 5V USB port (like on a laptop, power bank, or standard phone charger). Using a fast-charging adapter (9V or 12V) can damage the 120mAh battery.

Q: What happens if my phone battery dies? ▼

A: You don't need your phone to unlock the lock! The phone/App is only needed for the initial setup and for managing fingerprints. Once your fingerprint is stored, unlocking is 100% offline via the biometric sensor.

Q: How do I know if the battery is low? ▼

A: The smart lock has a built-in voltage monitor. When the battery drops to 3.5V, the Red LED light will flash after you unlock it. This is your cue to recharge within the next few days.

Q: Can I share access with someone else? ▼

A: Yes, in two ways. You can either enroll their fingerprint directly onto the device (up to 20 stored), or if they have the Tuya app, you can share device access digitally so they can unlock it via Bluetooth.

Pros & Cons at a Glance

✅ Pros

• Fast biometric unlocking
• Long 120-day standby battery
• Durable Zinc Alloy build
• Easy App setup

❌ Cons

• Not intended for submersion in water
• Must be careful not to use fast chargers

Final Verdict

The ULS3 Silver Fingerprint Pad Lock is a fantastic upgrade for anyone looking to simplify their daily routine. The combination of Tuya App control, Bluetooth 5.1, and a 20-fingerprint capacity makes it incredibly versatile for families, gym-goers, and travelers.

Whether you are securing a locker, a suitcase, or a gym bag, the ULS3 provides a seamless, keyless experience that fits perfectly into a modern, connected lifestyle.

ULS3 Smart Fingerprint Padlock | Model: ULS3 | Color: Silver | Zinc Alloy + Stainless Steel

For daily use on lockers, luggage, bags, and gym equipment.

price/৳2,558

size/φ25.5 × 75 MM