1. Product Overview
The Sonew Digital Mechanical Keyless Combination Door Lock provides secure access control without the need for keys, cards, or batteries. This robust lock features a 1-11 digit push-button keypad and is constructed from durable zinc alloy with chrome plating and stainless steel internal components. It is designed for various residential and commercial applications, including apartments, homes, offices, and specific sliding doors.

Figure 1: Front and back view of the Sonew Digital Mechanical Keyless Combination Door Lock, showcasing the keypad on one side and the internal locking mechanism on the other.
Key Features:
- Keyless Entry: No keys, cards, or batteries required for operation.
- Durable Construction: Zinc alloy outer case with chrome plating and stainless steel internal fittings for enhanced resistance to damage.
- Customizable Passcode: Supports 1-11 digit non-repetitive password combinations.
- Flexible Password Input: The order of pressing the password buttons does not affect unlocking (e.g., if the code is "123Y", pressing "123Y" or "Y123" will unlock).
- Reset Function: Allows correction of incorrect password entries before re-entering the correct code.
- Versatile Application: Suitable for left and right swing doors in various settings.
2. Safety Information
Please read all safety instructions carefully before installation and use to prevent injury or damage to the product. Keep this manual for future reference.
- Ensure the lock is installed by a qualified individual if you are unsure about the process.
- Verify door compatibility before drilling any holes. This lock is suitable for door thicknesses between 10-60mm (0.4-2.4in).
- This lock is not suitable for sliding glass doors unless a suitable door frame is present for installation.
- Do not attempt to modify or disassemble the lock beyond what is described in this manual. This may void the warranty and compromise security.
- Keep children away from the installation area and small parts to prevent choking hazards.
- Regularly check the lock for any signs of wear or damage. Do not use if damaged.
3. Setup and Installation
Careful installation is crucial for the proper function and security of your lock. Please follow these steps precisely.
3.1 Package Contents
Before beginning, ensure all components are present:

Figure 2: Included installation accessories and lock components.
- Outer Keypad Unit
- Inner Locking Unit
- Spindle/Shaft
- Strike Plate(s)
- Gaskets/Pads
- Mounting Screws and Bolts
- English User Manual (this document)
3.2 Pre-Installation Checks
- Door Thickness: Confirm your door thickness is between 10mm and 60mm (0.4-2.4 inches).
- Door Type: This lock is designed for left and right swing doors. It is not suitable for sliding glass doors without a frame.
- Tools Required: Drill, drill bits, screwdriver, measuring tape, pencil.

Figure 3: Lock dimensions and door compatibility specifications.
3.3 Installation Steps
Note: The instructions provided here are general. Refer to the included paper manual for detailed drilling templates if available.
- Prepare the Door:
- Mark the desired position for the lock on the door. Ensure the center distance of the bolt is approximately 20mm (0.8in) from the door edge.
- Drill necessary holes for the spindle and mounting screws according to the template.
- Install the Latch/Bolt Mechanism:
- Insert the latch mechanism into the edge of the door. Secure it with screws.
- Attach Gaskets:
- Place the rubber gaskets on both sides of the door where the lock units will be mounted. This protects the door surface and provides a snug fit.
- Mount Outer Keypad Unit:
- Feed the spindle through the latch mechanism and into the outer keypad unit.
- Position the outer keypad unit on the exterior side of the door, aligning it with the drilled holes.
- Mount Inner Locking Unit:
- Connect the inner locking unit to the spindle and align it with the mounting holes on the interior side of the door.
- Secure both units together using the provided long bolts/screws, ensuring they are tightened evenly.
- Install Strike Plate:
- On the door frame, mark the position where the latch bolt will engage.
- Chisel out the necessary recess and install the strike plate, securing it with screws.
- Test Operation:
- Before closing the door, test the lock and unlock mechanism to ensure smooth operation.
- Close the door and test the lock with the default or newly set password.

Figure 4: Exterior view of the lock installed on a door.

Figure 5: Interior view of the lock installed on a door.
4. Operating Instructions
4.1 Setting/Changing the Password
The lock allows for a 1-11 digit non-repetitive password. The order of pressing the buttons does not matter. For example, if your code is "123Y", pressing "123Y" or "Y123" will unlock the door.
To set or change the password, you typically need to access the internal mechanism of the keypad unit. This usually involves removing the back panel of the keypad unit (before installation or by carefully detaching it if already installed) and adjusting the internal pins or levers corresponding to your desired code. Consult the specific instructions in your physical manual for detailed steps on pin configuration.

Figure 6: Keypad and internal mechanism for password configuration.
4.2 Unlocking the Door
- Enter your 1-11 digit password by pressing the corresponding buttons on the keypad.
- Turn the handle or knob (if present) to retract the bolt and open the door.
4.3 Reset Function
If you press an incorrect button while entering your password, press the 'C' (Clear) button to reset the entry. Then, re-enter the correct password.

Figure 7: The 'C' button for resetting password entry.
5. Maintenance
To ensure the longevity and optimal performance of your Sonew Digital Mechanical Keyless Combination Door Lock, follow these simple maintenance guidelines:
- Cleaning: Wipe the lock's exterior with a soft, damp cloth. Avoid abrasive cleaners, solvents, or harsh chemicals, as these can damage the chrome finish.
- Lubrication: Periodically apply a small amount of graphite lubricant or a silicone-based spray to the internal moving parts of the latch mechanism to ensure smooth operation. Do not use oil-based lubricants as they can attract dust and grime.
- Inspection: Regularly check all mounting screws and bolts to ensure they are tight. Inspect the lock for any signs of wear, corrosion, or damage. Address any issues promptly.
- Environmental Factors: While durable, extreme weather conditions can affect performance. Ensure the lock is adequately protected from direct prolonged exposure to heavy rain or snow if installed outdoors.
6. Troubleshooting
If you encounter issues with your Sonew lock, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lock does not open after entering code. | Incorrect password entered; internal mechanism jammed; spindle not engaging correctly. | Press the 'C' button and re-enter the password carefully. Ensure the handle turns freely. Check for obstructions in the latch mechanism. Re-check installation of the spindle. |
| Buttons are stiff or unresponsive. | Dirt or debris under buttons; lack of lubrication; internal component misalignment. | Clean the keypad surface. Apply a small amount of graphite lubricant to the buttons. If the issue persists, professional inspection may be required. |
| Lock feels loose on the door. | Mounting screws are loose; improper installation. | Tighten all mounting screws. Ensure gaskets are properly seated. Review installation steps. |
| Door cannot be closed or latched properly. | Strike plate misalignment; door frame obstruction; latch mechanism issue. | Adjust the strike plate position. Check the door frame for any obstructions. Inspect the latch bolt for damage or misalignment. |
7. Product Specifications
| Feature | Detail |
|---|---|
| Brand | Sonew |
| Model Number | Sonewidqub7zpso |
| Lock Type | Mechanical Combination Lock, Keypad |
| Special Feature | Keyless, No Batteries Required |
| Material | Zinc Alloy (outer case, chrome plated), Stainless Steel (internal fittings) |
| Color | Chrome |
| Product Dimensions (L x W x H) | Approx. 0.39 x 0.39 x 0.39 inches (10 x 10 x 10 mm) - Note: This seems to be a generic placeholder, refer to Figure 3 for detailed dimensions. |
| Suitable Door Thickness | Approx. 10-60mm (0.4-2.4 inches) |
| Center Distance of Bolt | Approx. 20mm (0.8 inches) |
| Password Length | 1-11 Digits (non-repetitive) |
| Recommended Uses | Residential Security, Office Security, Kitchen Door Security, Balcony Door Security |
| Item Weight | Approx. 1.31 Kilograms (2.88 pounds) |
| UPC | 724942276629, 724942283474 |
8. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or contact Sonew customer service directly. Keep your proof of purchase for warranty claims.
For further assistance, you may visit the Sonew Store on Amazon.