1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your TUYA Wehere Smart Door Lock M531. Please read this manual thoroughly before installation and use to ensure proper function and safety. The M531 is an enhanced version of the M530, featuring a stronger motor for improved performance.
2. Safety Information
- Ensure all components are handled carefully during installation to prevent damage.
- Do not expose the lock to extreme temperatures or moisture unless specified. The product is not waterproof.
- Use only recommended battery types: 3 pieces of CR123A batteries.
- Keep physical keys and access codes secure and do not share them with unauthorized individuals.
- For any issues, contact customer service before attempting repairs or returns.
3. Package Contents
The standard package for the Wehere M531 Smart Door Lock typically includes:
- Wehere M531 Smart Lock Unit
- Remote Control (may vary by specific variant)
- Mounting Hardware (screws, etc.)
- Instruction Manual (this document)
Optional accessories such as the F100 Fingerprint Controller, F101 Smart Keypad, and W100 WiFi Bridge/Tuya Gateway are sold separately and are not included in the base package.
4. Specifications
| Feature | Specification |
|---|---|
| Model Number | M531 |
| Brand Name | Wehere |
| Power Supply | DRY BATTERY (3x CR123A) |
| Protection Level | No Waterproof |
| Suitable for Mortise | Other |
| Suitable Door Type | Steel Door, Wooden Door, Glass Door, Brass Door, Stainless Steel Door |
| Special Features | Support Gateway |
| Finish Type | Powder Coated |
| Doorknob Function | Biometric, Key & Keypad |
| Connectivity | Bluetooth, WiFi |
| Ways To Unlock | App, Remote Control, Bluetooth, WiFi, Password, FINGERPRINT |
| Material | Zinc Alloy |
| Handle Direction | Direction Reversible |
| Origin | Mainland China |
| Certification | CE |
| Smart Home Platform | Other, Alexa, Tuya, Google Assistant |
4.1. Lock Series Comparison
The following table outlines the differences between various Wehere lock models and their compatibility:

Image: Comparison table for Wehere lock series and accessory compatibility.
5. Installation Guide
5.1. Compatibility Check
Before installation, ensure the M531 is compatible with your door and existing lock cylinder:
- The M531 is designed for EU locks and some Israeli locks that do not require cylinder changes.
- If your lock has strong lock tongues (as shown in the image below), it is recommended to use the stronger motor version (M531).

Image: Door lock tongue configurations and recommendation for stronger motor.
- To determine your lock type and cylinder length, refer to the diagram below.

Image: Guide to identifying lock type and measuring cylinder length.
If you are unsure about compatibility, please send pictures of your current lock and lock cylinder to customer support before placing an order.
5.2. Preparation
The M531 replaces part of your existing lock to upgrade it to a smart lock. Follow these preparation steps:
- Cutting the Key: The original key needs to be cut to fit the M531 unit. Refer to the image below for precise key cutting instructions.

Image: Key cutting process for M531 installation.
- Removing the Switch: For Israeli Gear Lock Cylinders, the internal switch may need to be removed before installing the M531.

Image: Switch removal for Israeli gear lock cylinder.
5.3. Step-by-Step Installation (General)
Detailed installation instructions are best followed by watching the official installation video. The general steps are:
- Prepare your existing lock cylinder and key according to the compatibility and preparation steps above.
- Attach the M531 unit to the existing cylinder, ensuring correct orientation as shown in diagrams.
- Secure the M531 unit firmly with the provided mounting hardware.
- Insert 3x CR123A batteries into the M531 unit.
5.4. Accessory Installation
Enhance your smart lock with optional accessories:
- F100 Fingerprint Controller (Outside): Provides biometric unlocking.
- F101 Smart Keypad (Outside): Allows PIN code entry.
- W100 WiFi Bridge / Tuya Gateway (Inside): Enables remote control via WiFi.

Image: F100 Fingerprint Controller and F101 Smart Keypad installation.

Image: Perfect accessories for your smart lock.
6. Operating Instructions
6.1. App Control
The M531 lock connects to your smartphone via Bluetooth using the WeHere app. If you have the Tuya version, it will use the Tuya/Smartlife app.
- The app must be open on your phone to unlock the door via Bluetooth.
- For remote control via the internet, a compatible WiFi gateway (W100 or Tuya gateway) is required.

Image: WeHere M531 lock controlled by APP via Bluetooth.

Image: App connectivity notes for fingerprint and keypad tools.
6.2. Unlocking Methods
The M531 offers multiple ways to unlock your door:
- App Unlock: Use the WeHere or Tuya/Smartlife app on your smartphone.
- Fingerprint Unlock: (With F100 accessory) Biometric access for registered users.
- PIN Unlock: (With F101 accessory) Enter a numerical code on the keypad.
- Key Unlock: Traditional physical key for backup or manual access.
- Remote Control: (Via WiFi with gateway) Unlock from anywhere with internet access.

Image: Multiple unlocking methods.

Image: App, Siri, and Key unlock methods.
6.3. Automatic Locking
You can configure the lock to close automatically after a set period (e.g., 10 seconds after opening) within the WeHere app settings.
6.4. User Management and Security
- User Sharing: Grant access to friends, family, or temporary guests. Access can be set for a specific period or indefinitely.

Image: Unlimited number of users by sharing.
- Bank-Grade Security: The lock utilizes OTP (One-Time Password) technology, where passwords change every 60 seconds, similar to bank authentication systems.

Image: Bank-grade security under OTP technology.
6.5. Event Log
The app allows you to monitor who enters and leaves your home, providing a detailed event log of access times.

Image: See who's coming and going (event log).
7. Maintenance
7.1. Battery Replacement
- The lock requires 3 CR123A batteries (not included).
- Battery life is approximately 6 months for standard versions and about 3 months for the stronger motor M531 due to increased power consumption.
- Replace batteries when the low battery indicator appears in the app or on the lock unit.
8. Troubleshooting
- App Connectivity Issues: If you cannot download or connect to the WeHere app, ensure your phone's Bluetooth is enabled and the app is open. Contact support if issues persist.
- WiFi Gateway Connection Problems: If the WiFi gateway (W100 or Tuya gateway) is not connecting, ensure it is properly set up, powered on, and within range of both the lock and your WiFi router. Refer to the gateway's specific instructions for setup.
- Lock Not Operating Smoothly (Strong Lock Tongues): If your door has strong or multiple lock tongues, ensure you are using the M531 (stronger motor version). The standard M530 may not provide sufficient force for reliable operation.
- Cylinder Not Closing Automatically: Check the settings in the WeHere app to ensure that an automatic closing time (e.g., 10 seconds after opening) is configured and enabled.
- General Malfunction: If you encounter any other issues, please contact customer service directly before attempting to return the product.
9. User Tips
- For optimal performance, ensure your door's existing lock mechanism is well-maintained and operates smoothly without excessive friction.
- Regularly check battery levels through the app to avoid unexpected lockouts.
- If using a gateway, ensure a stable WiFi connection for consistent remote access and notifications.
- Always keep a physical key in a secure, accessible location as a backup in case of battery depletion or electronic malfunction.
- If you have a Tuya version, remember that the Tuya app can only unlock the gateway, while the WeHere app allows both locking and unlocking.
10. Warranty and Support
For warranty information, technical assistance, or any product-related inquiries, please contact the seller or manufacturer directly. When contacting support, please have your product model number (M531) and purchase details readily available to facilitate faster service.




