Introduction
The iulock Waterproof Electronic Door Knob offers keyless entry convenience with enhanced security features. Designed for durability and ease of use, this smart lock is suitable for various applications including offices, warehouses, bedrooms, and garages. It allows for programming multiple user codes and includes features like auto-lock, silent mode, and password disguise for optimal security and peace of mind.

Image: The iulock electronic door knob in satin nickel finish, with two physical keys.
Setup and Installation
What's in the Box

Image: Diagram showing all components included in the iulock electronic door knob package, excluding batteries.
- Electronic Door Knob Assembly (Exterior and Interior)
- Backlit Keypad
- 2 Traditional Keys (KW type)
- Adjustable Latch (2-3/8 Inch or 2-3/4 Inch)
- Mounting Hardware (Screws)
- Installation Template
- User Manual (PDF available online)
Note: 4 AA batteries are required for operation and are not included in the package.
Installation Guide
The iulock electronic door knob is designed for easy installation, typically requiring only a screwdriver and approximately 20 minutes. It is a direct replacement for standard door knobs and fits both left and right-handed doors. Ensure your door thickness is between 1-3/8 Inch to 2-1/2 Inch.

Image: Technical diagram illustrating the dimensions and compatibility of the door knob with standard doors, including backset, rosette diameter, front height, door thickness, hole diameter, and knob diameter.
For detailed step-by-step instructions, please refer to the official User Guide PDF available at: User Guide (PDF).
Operating Instructions
Keyless Entry and Code Management
The keypad allows you to program up to 50 unique user access codes and 1 master code. Codes can range from 4 to 15 digits in length and are easily programmed directly on the backlit keypad.

Image: The electronic door knob with a visual representation of code entry, highlighting the master code and user codes.
- Password Disguise: For added security, you can enter random digits before or after your correct access code. The lock will still recognize the correct sequence within the longer entry.
- Silent Mode: Enable or disable beeping sounds during operation for quiet entry/exit.
- Passage Mode: This mode allows the door to remain unlocked for continuous access. There are two types: Easy passage mode (√5√master code√) for easy return to auto-lock, and Advanced passage mode (√0√master code√1√) for extended periods without auto-lock. To exit Advanced passage mode, enter [master code√].

Image: Visual representation of the door knob's key features including Passage Mode, Silent Mode, Auto Lock, Code Protect, support for 50+ codes, and easy installation.
Auto-Lock Feature
For peace of mind and enhanced security, the lock automatically re-locks itself approximately 4 seconds after being opened. This ensures the door is always secured behind you.
Manual Key Access
In addition to keyless entry, the door knob includes two traditional keys (KW type) for manual access. These keys serve as a reliable backup in case of battery depletion or if preferred for entry.
Maintenance
Battery Management
The iulock door knob operates on 4 AA batteries (not included). These batteries are designed to last for more than 2 years under normal usage. The lock features a low battery warning system, alerting you approximately 2 months in advance when batteries need replacement.

Image: Cross-section view of the door knob showing the battery compartment for 4 AA batteries and the USB Type-C backup port.
In the event of complete battery depletion, a Type-C USB backup port is available (cable not included) to provide temporary power for emergency access. Simply connect a Type-C USB cable to the port and enter your code.
Weather Resistance
The iulock door knob boasts an IP65 waterproof rating, making it highly resistant to water and dust. This ensures reliable operation in various weather conditions, including rain and sun, making it ideal for outdoor installations.

Image: The electronic door knob with water droplets, demonstrating its IP65 waterproof capability, alongside an image showing its operational temperature range.
Troubleshooting
If you encounter issues with your iulock electronic door knob, consider the following common solutions:
- Incorrect Code Entry: Ensure you are entering the correct master or user code. The keypad will indicate red for incorrect entries and green for correct entries.
- Low Batteries: Check the battery level. If the low battery warning is active or the lock is unresponsive, replace the 4 AA batteries. Use the Type-C USB backup for temporary power if needed.
- Mechanical Jam: Ensure there are no obstructions preventing the latch from extending or retracting fully.
- Resetting the Lock: If issues persist, refer to the User Manual for instructions on how to perform a factory reset. This can resolve many software-related problems.
For more detailed troubleshooting steps and specific error codes, please consult the full User Manual (PDF) provided with your product or available online.
Product Specifications
| Feature | Detail |
|---|---|
| Brand | iulock |
| Model | B09B5FGL72 |
| Color | Satin Nickel |
| Material | Metal |
| Lock Type | Door lock |
| Special Feature | Waterproof (IP65) |
| Item Dimensions (L x W x H) | 8.07 x 4.53 x 4.53 inches |
| Item Weight | 1 Pounds |
| Power Source | 4 AA batteries (not included) |
| Battery Life | Up to 2 years |
| Code Capacity | 1 Master code, 50 User codes |
| Code Length | 4-15 digits |
| Backup Access | 2 Traditional keys (KW type), USB Type-C backup |
| Door Thickness Compatibility | 1-3/8 Inch to 2-1/2 Inch |
| Adjustable Latch | 2-3/8 Inch or 2-3/4 Inch |
Warranty and Customer Support
Warranty Information
IULOCK extends a lifetime limited mechanical and finish warranty and a one-year limited electronics warranty to the original consumer user (“Original User”) of our IULOCK brand product (“Product”) against defects in material and workmanship, as long as the Original User occupies the residential premises upon which the Product was originally installed. This warranty is subject to the terms and conditions outlined in the full warranty document.
Customer Support
Iulock is committed to providing lifetime customer support. If you have any questions, require assistance with installation, programming, or troubleshooting, please reach out to our customer service team. Our goal is to ensure your complete satisfaction and provide a seamless experience with your electronic door knob.
For further assistance, please refer to the comprehensive User Manual (PDF) available at: User Manual (PDF).





