1. Introduction
This manual provides comprehensive instructions for the installation, setup, operation, and maintenance of your Evanshow Smart Door Lock with Knob. This keyless entry system offers multiple access methods, including fingerprint recognition, keypad passcodes, NFC cards, and traditional mechanical keys, enhancing security and convenience for your home or apartment.
Please read this manual thoroughly before installation and use to ensure proper function and to avoid any damage to the product or property.
2. Package Contents
Verify that all components are present in the package before beginning installation:
- Exterior Smart Lock Unit with Keypad and Fingerprint Sensor
- Interior Lock Unit with Knob
- Latch Bolt
- Strike Plate
- Mounting Screws and Hardware
- Mechanical Keys (2 or more)
- NFC Cards (2 or more)
- Installation Template
- User Manual (this document)

Figure 2.1: Overview of Evanshow Smart Door Lock components. This image displays the exterior smart lock unit, the interior knob unit, mechanical keys, and NFC cards, illustrating the main parts included in the package.
3. Setup and Installation
The Evanshow Smart Door Lock is designed for quick and easy installation on standard U.S. wooden doors without specialized tools or technicians.
3.1. Door Compatibility Check
Before installation, ensure your door meets the following specifications:
- Door Hole Diameter: 2-1/8 inches (54mm)
- Backset: Adjustable for 2-3/8 inches (60mm) or 2-3/4 inches (70mm)
- Latch Hole Diameter: 1 inch (25mm)
- Door Thickness: 1.38 inches to 2.17 inches (35mm to 55mm)

Figure 3.1: Door measurement guide. This diagram illustrates the required door hole diameter, backset, latch hole, and door thickness for proper installation of the smart lock.
Ensure your door is not mortise or integrated lock type, and the latch hole is chiseled correctly as shown in the diagram.
3.2. Installation Steps
- Prepare the Door: If replacing an existing lock, remove it. Use the provided template to mark and drill holes if installing on a new door.
- Install the Latch Bolt: Insert the latch bolt into the door edge. Ensure the "UP" arrow on the latch bolt faces upwards.
- Install the Exterior Unit: Place the exterior smart lock unit onto the door, aligning the spindle with the latch bolt mechanism.
- Install the Interior Mounting Plate: Secure the interior mounting plate to the exterior unit using the provided screws.
- Connect Cables: Carefully connect the cable from the exterior unit to the interior unit.
- Install the Interior Unit: Attach the interior knob unit to the mounting plate, ensuring the knob operates smoothly.
- Install Batteries: Open the battery cover on the interior unit and insert four (4) AA alkaline batteries (not included), observing polarity.
- Test Operation: After installation, test all locking and unlocking functions using the mechanical key and the interior knob before closing the door.

Figure 3.2: Smart lock installation sequence. This image provides a visual guide for installing the smart door lock, detailing the order of component assembly.
3.3. Initial Setup and App Pairing
To utilize smart features, download the Tuya Smart app from your device's app store. Follow the in-app instructions to pair your lock via Bluetooth and Wi-Fi (2.4GHz network required).
- Create an account or log in.
- Add a new device and select "Lock" or "Smart Door Lock".
- Follow the on-screen prompts to connect the lock to your Wi-Fi network.
4. Operating Instructions
The Evanshow Smart Door Lock offers multiple convenient ways to unlock your door.
4.1. Unlocking Methods

Figure 4.1: Multiple unlocking options. This image displays the six different methods available to unlock the Evanshow Smart Door Lock, including digital and physical access.
- Fingerprint Unlock: Place your registered finger on the fingerprint sensor. The lock will unlock if the fingerprint is recognized.
- Keypad Passcode: Enter your registered passcode on the keypad, followed by the '#' key.
- NFC Card Unlock: Tap a registered NFC card against the designated NFC reader area on the lock.
- Mechanical Key Unlock: Insert the mechanical key into the keyhole and turn to unlock. This is for emergency access or when batteries are depleted.
- Tuya App Control: Use the Tuya Smart app on your smartphone to remotely unlock or lock the door.
- Voice Control: Integrate with compatible voice assistants (e.g., Alexa, Google Assistant) to unlock the door using voice commands (requires app setup).
4.2. App Intelligent Control Features
The Tuya Smart app provides advanced control and monitoring capabilities:

Figure 4.2: Tuya Smart app features. This image highlights the intelligent control options available through the mobile application, such as auto-lock settings and unlock records.
- Auto Lock: Configure the lock to automatically secure itself after a pre-set time (e.g., 5, 10, 15 seconds).
- Passage Mode: Temporarily disable auto-lock for continuous access during specific periods.
- Anti-Peeking Password: Enter random digits before or after your actual passcode to prevent others from guessing your code.
- Silent Mode: Disable keypad sounds for quiet operation.
- Live View Unlock Records: Monitor unlock activities in real-time through the app, including who unlocked the door and when.
- Remote Passcode Generation: Generate temporary or one-time passcodes remotely for guests or service providers.
5. Maintenance
- Battery Replacement: Replace all four AA batteries when the low battery indicator appears or when the lock's performance degrades. Use only high-quality alkaline batteries.
- Cleaning: Wipe the lock's exterior surfaces with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the finish or electronic components.
- Fingerprint Sensor: Keep the fingerprint sensor clean and dry for optimal performance.
- Mechanical Components: Periodically check screws for tightness and ensure the knob and latch operate smoothly. Do not lubricate the internal lock mechanism unless specifically instructed by the manufacturer.
6. Troubleshooting
- Lock is not responding:
- Check battery level. Replace batteries if low.
- Ensure the lock is properly installed and all cables are connected.
- If using the app, check your Wi-Fi connection.
- Fingerprint not recognized:
- Ensure your finger is clean and dry.
- Try re-registering your fingerprint in the app.
- Ensure the sensor is clean.
- Keypad not responding:
- Check battery level.
- Ensure you are pressing the keys firmly.
- Auto-lock not working:
- Verify that auto-lock is enabled and configured correctly in the Tuya Smart app.
- Check if Passage Mode is active.
- Cannot connect to Wi-Fi:
- Ensure your Wi-Fi network is 2.4GHz.
- Check your router's signal strength near the door.
- Restart your router and try pairing again.
For further assistance, refer to the Tuya Smart app's help section or contact customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Evanshow |
| Model | Smart Door Lock with Knob |
| ASIN | B0FK1QKHR2 |
| Material | Metal |
| Connectivity | Bluetooth, Wi-Fi (2.4GHz) |
| Power Source | 4 x AA Alkaline Batteries (not included) |
| Unlocking Methods | Fingerprint, Passcode, NFC Card, Mechanical Key, App Control, Voice Control |
| Door Thickness Compatibility | 1.38in - 2.17in (35mm - 55mm) |
| Backset Compatibility | 2-3/8in (60mm) or 2-3/4in (70mm) |
8. Warranty Information
Specific warranty details for the Evanshow Smart Door Lock with Knob are typically provided at the point of purchase or within the product packaging. Please retain your proof of purchase for warranty claims.
For detailed warranty terms and conditions, please contact the seller or visit the official Evanshow website.
9. Customer Support
If you encounter any issues or have questions regarding your Evanshow Smart Door Lock, please refer to the troubleshooting section of this manual or the help resources within the Tuya Smart app.
For further assistance, please contact Evanshow customer support through the retailer where the product was purchased or visit the official Evanshow support website.

