LNDU Keyless Entry Door Lock with Keypad (Model D180)

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your LNDU Keyless Entry Door Lock with Keypad, Model D180. Please read this manual thoroughly before installation and use to ensure proper function and security.

Image 1.1: Overview of the LNDU D180 Keyless Entry Door Lock components.

2. Installation

2.1. Pre-Installation Check

Before beginning installation, ensure your door meets the following specifications:

• Backset: Compatible with 2-3/8 inches (60mm) and 2-3/4 inches (70mm).
• Door Thickness: Suitable for doors ranging from 1-3/8 inches to 2-1/8 inches (35mm-55mm).
• Latch Hole: Compatible with both chiseled and non-chiseled latch holes.
• Door Type: Designed for single cylinder deadbolt applications. Not compatible with mortise, integrated, or rim cylinder locks.

Image 2.1: Door compatibility and dimension guide.

Image 2.2: Latch hole and lock type compatibility details.

2.2. Required Tools

Only a screwdriver is typically required for installation.

2.3. Installation Steps

Follow these general steps for installation. Refer to the detailed diagrams for visual guidance.

1. Prepare the Door: Ensure the door is properly drilled according to the dimensions provided in the compatibility section.
2. Install the Latch: Insert the latch into the door edge and secure it with screws. Ensure the latch bolt faces the correct direction.
3. Install the Exterior Assembly: Place the exterior keypad assembly onto the door, feeding the cable through the cross bore hole.
4. Install the Mounting Plate: Secure the interior mounting plate to the exterior assembly using screws.
5. Connect the Cable: Connect the cable from the exterior assembly to the interior assembly.
6. Install the Interior Assembly: Mount the interior assembly onto the mounting plate and secure it.
7. Install Batteries: Insert 4 AA batteries (not included) into the battery compartment.
8. Test Operation: Test the lock with the mechanical key and default codes (if any) to ensure smooth operation.

Image 2.3: Detailed installation steps for the LNDU D180 lock.

2.4. Door Handing Identification

The lock is designed to automatically identify the door's handing (left or right). If the automatic identification does not function as expected, consult the full product manual for manual adjustment procedures or contact support.

Image 2.4: Automatic door handing identification.

3. Operating Instructions

3.1. User Code Management

The LNDU D180 supports up to 3 administrator codes and 97 user codes, totaling 100 entry codes. This allows for flexible access management for family members, guests, or service providers.

Image 3.1: Keyless code capacity for various users.

To Add User Codes: Refer to the programming section of the complete manual for specific steps to add new user codes. Administrator codes have higher privileges for managing other codes and lock settings.

To Delete User Codes: The ability to delete individual user codes is a critical security feature. Please consult the full product manual for detailed instructions on how to remove specific passcodes. If the instructions are unclear, contact LNDU customer support for assistance.

3.2. Anti-Peeking Password Feature

This security feature enhances privacy by allowing you to enter random digits before and after your actual passcode. This prevents unauthorized individuals from discerning your code by observing your finger movements on the keypad.

• Example: If your passcode is 123456, you can enter XXXXX123456XXXXX, where 'X' represents any random digit. The lock will still recognize the correct passcode within the sequence.

Image 3.2: Anti-peeking password in action.

3.3. Automatic Locking

The lock can be configured to automatically lock after a set period (typically 10-30 seconds) once the door is closed. This feature provides added security and peace of mind.

Image 3.3: Automatic locking mechanism.

Note: The auto-lock feature typically engages when the door is closed and the lock is in an unlocked state. If you unlock the door from the inside, the auto-lock may not immediately re-engage until the door is opened and closed again, or until a specific auto-lock timer expires after an external unlock.

3.4. One-Touch Locking

To quickly lock the door from the outside, simply press and hold the lock key on the keypad for 2 seconds.

Image 3.4: One-touch locking for convenience.

3.5. Manual Key Override

In case of battery depletion or electronic malfunction, the lock can always be opened using the provided physical backup keys.

Image 3.5: Manual key override for emergency access.

3.6. Wrong Password Alarm

For enhanced security, the lock will trigger an alarm after 5 consecutive incorrect password attempts. This deters unauthorized access attempts.

Image 3.6: Wrong password alarm feature.

4. Maintenance

4.1. Battery Replacement

The lock operates on 4 AA batteries (not included). A low battery indicator will alert you when the batteries need to be replaced. The lock is designed for approximately 180 days of battery life with average use (about 10 openings per day).

Image 4.1: Battery life and low battery alert indicators.

To replace batteries:

1. Remove the battery cover on the interior assembly.
2. Remove the old batteries.
3. Insert 4 new AA alkaline batteries, ensuring correct polarity.
4. Replace the battery cover.

4.2. Emergency Power Supply

If the batteries completely deplete before replacement, the lock features a micro-USB port for emergency power. Connect a power bank to this port to temporarily power the lock and gain entry using a passcode or key.

Image 4.2: Emergency power supply via micro-USB.

4.3. Cleaning

Clean the lock's exterior with a soft, damp cloth. Avoid abrasive cleaners or solvents, as these can damage the finish and electronic components.

5. Troubleshooting

If you encounter issues with your LNDU D180 lock, refer to the following common problems and solutions:

• Lock does not respond:
  • Check battery level. Replace batteries if low.
  • Use the emergency power supply feature with a power bank.
  • Ensure the cable connection between the exterior and interior assemblies is secure.
• Keypad is not lighting up:
  • Batteries may be dead or incorrectly installed. Replace or re-install.
• Auto-lock is not engaging:
  • Verify that the auto-lock feature is enabled in the lock's settings (refer to the full manual).
  • Ensure the door is fully closed and the latch bolt is not obstructed.
  • Note that auto-lock may not engage immediately after unlocking from the inside.
• Difficulty changing or deleting user codes:
  • Refer to the detailed programming instructions in the full product manual.
  • Ensure you are using an administrator code for management functions.
  • If issues persist, contact LNDU customer support.
• Bolt direction issue during installation:
  • While the lock has automatic handing detection, if it fails, consult the full manual for instructions on manually setting the bolt direction or contact support.

6. Specifications

Image 6.1: Lock's durability features, including IP54 weather resistance.

7. Warranty and Support

7.1. Warranty Information

For specific warranty details regarding your LNDU D180 Keyless Entry Door Lock, please refer to the warranty card included with your product or visit the official LNDU website. Warranty terms typically cover manufacturing defects for a specified period from the date of purchase.

7.2. Customer Support

If you require assistance with installation, programming, troubleshooting, or any other aspect of your LNDU D180 lock, please contact LNDU customer support. Contact information can usually be found on the product packaging, the official LNDU website, or within the full product manual.

When contacting support, please have your product model (D180) and purchase information readily available.