---
product_id: 359454914
title: "iulock IU-20 Code Door Lock, Electronic Door Knob with Keypad and Key, Auto Lock, Waterproof, Passage Function, Long Battery Life,50 Codes, Easy to use and Install for Office/Warehouse/Bedroom/Garage"
brand: "iulock"
price: "€ 91.67"
currency: EUR
in_stock: true
reviews_count: 13
category: "Iulock"
url: https://www.desertcart.be/products/359454914-iulock-iu-20-code-door-lock-electronic-door-knob-keypad
store_origin: BE
region: Belgium
---

# IP65 waterproof rating Long-lasting battery with USB backup 50 user codes programmable iulock IU-20 Code Door Lock, Electronic Door Knob with Keypad and Key, Auto Lock, Waterproof, Passage Function, Long Battery Life,50 Codes, Easy to use and Install for Office/Warehouse/Bedroom/Garage

**Brand:** iulock
**Price:** € 91.67
**Availability:** ✅ In Stock

## Summary

> 🔐 Unlock the future of secure, stylish access—because your door deserves smarter protection.

## Quick Answers

- **What is this?** iulock IU-20 Code Door Lock, Electronic Door Knob with Keypad and Key, Auto Lock, Waterproof, Passage Function, Long Battery Life,50 Codes, Easy to use and Install for Office/Warehouse/Bedroom/Garage by iulock
- **How much does it cost?** € 91.67 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/359454914-iulock-iu-20-code-door-lock-electronic-door-knob-keypad)

## Best For

- iulock enthusiasts

## Why This Product

- Trusted iulock brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Master Your Access:** Program up to 50 unique codes plus a master code for ultimate control and convenience.
- • **Built to Brave the Elements:** IP65 waterproof and heavy-duty metal construction ensures security rain or shine.
- • **Backup Keys & Battery Alerts:** Never get locked out with mechanical key backup and low battery warnings with USB emergency power.
- • **Smart Auto-Lock & Silent Mode:** Enjoy peace of mind with automatic locking and discreet silent operation.
- • **Effortless Installation & Universal Fit:** Fits most doors with adjustable latch and reversible knob—install in minutes with a screwdriver.

## Overview

The IU-20 Code Door Lock is a sleek, durable electronic door knob featuring a backlit keypad that supports up to 50 user codes and a master code. Designed for both residential and commercial use, it boasts IP65 waterproofing, heavy-duty metal construction, and smart features like auto-lock, silent mode, and passage function. Easy to install on standard doors with reversible knobs and adjustable latches, it also offers mechanical key backup and USB battery emergency power, backed by a lifetime mechanical and finish warranty.

## Description

Product description 2021 Newest Electronic Door Knob Reliable & Stylish Code or Key,You Decide MULTI-FUNCTIONS KEEP YOUR HOME OR OFFICE SAFER &MORE STYLISH,MAKE IT SMARTER & MORE CONVENIENT. New Style. New Technique. Fashion. Weatherproof. Update Door Knobs Easy to Program Add user code: √1√Master code√New user code√New user code√ Change user code: √2√Master code√Old user code√New user code√New user code√ Change master code:√2√Old master code√Old master code√New master code√New master code√ Delete user code:√3√Master code√Unwanted user code√ Delete all user code : √4√Master code√ Enable easy passage mode:√5√Master code√ [Disable easy passage mode: Press any button] Enable advanced passage mode: √0√Master code√1√ [ Disable advanced passage mode: Master code√ ] Enable beeper:√6√Master code√1√ [Disable beeper:√6√Master code√0√] Package 1* Electronic Door Knob lock 2* Keys (KW1type) 1* User Manual 1* Screw Set 1* Strike Plastic Box 1* Strike Plate Full Metal and Heavy Duty Perfect Design And Smart Keyless Entry 1 master code and 50 user codes. easily program in seconds at the backlit keypad. Easy to grasp door handle and professional design. it can be set to stay unlocked when you are going to be going in and out a lot, enable advanced passage mode,then no key or code required for access. Fits Most Standard Doors Fit both left and right handed doors. with a 2-3/8 inch or 2-3/4 inch adjustable latch. Door thickness：1-3/8 inch to 2-1/2 inch . Installs in minutes just with a screwdriver. Durable and Convenient, Maintenance-Free The interior knob is always free to turn as one would hope.more than 2 years battery life with 4 AA batteries (batteries not included).has an idealistic simplified look,ideal for bedrooms,cloakrooms ,utility rooms,garage,courtyard doors,rental rooms, apartments, AIRBNB. Important notes for installation When installing the front panel, please pay attention to correctly insert the square tube into the latch, the square tube is marked with "THIS SIDE UP". The wrong angle of the square tube will cause the door to not lock after installation. There are two small protrusions on the bottom of the rosette of the door handle, which are used to fix it firmly on the wooden door. Pay attention to the protrusions when you install it on the metal door. After installation, check whether the front and rear handles can return to their original positions or not after they are turned every time. If not, please adjust the front and rear panel fixing screws to ensure that the handle will return to the original position, otherwise the code will not be unlocked occasionally. Because the knob is a heavy-duty design,if use the key to access, PLEASE NOTE:rotate the knob help the key to turn the latch, so this makes it easy to open the door.

Review: Door lock - This works great! Multiple codes can be used, and I use this for my closet door application due to eye store, handguns, and it keeps children and people out! Very easy to install, and great value for the money. The battery life lasts twice as long if you use lithium batteries.
Review: Most bang for your buck - Easy to program I like the fact that they are rechargeable just in case the batteries die heavy duty material

## Features

- [Keyless Entry & Ergonomic Design]✦ This keypad door knob lock allows you to program up to 50 user access codes and 1 master code.the code in length can be 4 to 15 digit,easily programmed at the backlit keypad in seconds. An idealistic simplified look brings trendy style to the exterior & interior doors of your office, home and rental property,etc.
- [Enhanced Security & Durable]✦ This electronics keypad lock has the strength and durability optimized for commercial applications.Heavy-duty and contemporary design,premium metal construction and solid lock cylinder,easy-to-grasp handle.IP65 weatherproof,works great in any weather.Ideal for your entrance doors,front door entry,garage,utility room doors,side, backdoors,bedrooms.
- [Multi-functions & Smart]✦ Auto-locks behind you for peace of mind.Password disguise.Silent mode.Depending on your needs,you can enable Passage Mode.Backlit keypad will lit when pushing any button.Low battery warning,and you can use type-c usb backup (cable not included) in case that batteries run out.The backup keys are compatible with most mechanical keys.
- [Easy Install & Universal Fit ]✦This keyless entry door knob is a direct replacement for your standard doors,the free rotating knob makes it fit both left and right handed doors,door thickness：1-3/8 Inch to 2-1/2 Inch,with a 2-3/8 Inch or 2-3/4 Inch adjustable latch. Install in minutes with just a screwdriver.
- [Lifetime Customer Support]✦ No more lockouts.It is an awesome gift that can bring new excitement and convenience to you.Iulock door knob comes with a lifetime mechanical and finish.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09B5DXZ16 |
| Additional Features | Waterproof |
| Best Sellers Rank | #91,661 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #387 in Door Knobs |
| Brand | iulock |
| Brand Name | iulock |
| Color | Matte Black |
| Control Method | App |
| Controller Type | Hand Control, Mechanical knob, Push Button |
| Customer Reviews | 4.1 out of 5 stars 1,200 Reviews |
| Finish Types | matte |
| Item Dimensions | 8.07 x 4.53 x 4.53 inches |
| Item Weight | 16 ounces |
| Item dimensions L x W x H | 8.07 x 4.53 x 4.53 inches |
| Lock Type | Door lock |
| Manufacturer | IULOCK |
| Manufacturer Warranty Description | Lifetime Limited Mechanical and Finish Warranty and 1-Year Limited Electronics Warranty Subject to the terms and conditions of the warranty, 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 Or… |
| Material | Metal |
| Material Type | Metal |
| Model Number | IU-20 |
| Number of Pieces | 4 |
| Recommended Uses For Product | Security |
| Shape | Rectangular |
| Special Feature | Waterproof |
| Style Name | Contemporary |
| UPC | 781509852207 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** iulock
- **Item dimensions L x W x H:** 8.07 x 4.53 x 4.53 inches
- **Lock Type:** Door lock
- **Material:** Metal
- **Special Feature:** Waterproof

## Images

![iulock IU-20 Code Door Lock, Electronic Door Knob with Keypad and Key, Auto Lock, Waterproof, Passage Function, Long Battery Life,50 Codes, Easy to use and Install for Office/Warehouse/Bedroom/Garage - Image 1](https://m.media-amazon.com/images/I/61KaRw8oLqL.jpg)
![iulock IU-20 Code Door Lock, Electronic Door Knob with Keypad and Key, Auto Lock, Waterproof, Passage Function, Long Battery Life,50 Codes, Easy to use and Install for Office/Warehouse/Bedroom/Garage - Image 2](https://m.media-amazon.com/images/I/71lz66bTKpL.jpg)
![iulock IU-20 Code Door Lock, Electronic Door Knob with Keypad and Key, Auto Lock, Waterproof, Passage Function, Long Battery Life,50 Codes, Easy to use and Install for Office/Warehouse/Bedroom/Garage - Image 3](https://m.media-amazon.com/images/I/81JGrWaPenL.jpg)
![iulock IU-20 Code Door Lock, Electronic Door Knob with Keypad and Key, Auto Lock, Waterproof, Passage Function, Long Battery Life,50 Codes, Easy to use and Install for Office/Warehouse/Bedroom/Garage - Image 4](https://m.media-amazon.com/images/I/71ZTeQxRYTL.jpg)
![iulock IU-20 Code Door Lock, Electronic Door Knob with Keypad and Key, Auto Lock, Waterproof, Passage Function, Long Battery Life,50 Codes, Easy to use and Install for Office/Warehouse/Bedroom/Garage - Image 5](https://m.media-amazon.com/images/I/719wjGmsYHL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Door lock
*by I***Y on February 26, 2026*

This works great! Multiple codes can be used, and I use this for my closet door application due to eye store, handguns, and it keeps children and people out! Very easy to install, and great value for the money. The battery life lasts twice as long if you use lithium batteries.

### ⭐⭐⭐⭐⭐ Most bang for your buck
*by J***N on May 6, 2026*

Easy to program I like the fact that they are rechargeable just in case the batteries die heavy duty material

### ⭐⭐⭐⭐⭐ Perfect outdoor lock
*by S***N on April 8, 2026*

Amazing lock. Works really well with all my outside security gates

## Frequently Bought Together

- iulock IU-20 Code Door Lock, Electronic Door Knob with Keypad and Key, Auto Lock, Waterproof, Passage Function, Long Battery Life,50 Codes, Easy to use and Install for Office/Warehouse/Bedroom/Garage
- iulock Keypad & Key Smart Door Lock, 50 User Codes, Waterproof, Auto Lock - Matte Black
- Double Sided Keypad Door Knob with Dual Cylinders and Key Alike, iuknob Keyless Entry Smart Door Lock for Entrance, Fence, Gate, Swimming Pool,Waterproof and Weatherproof for Outdoor & Interior Door.

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-05-25*