---
product_id: 314188142
title: "COLOSUS NDL638 Smart - Keyless Entry Door Lock Deadbolt, Touchscreen Works with App to Control and Grant Access for Home, Office, Rental Properties, Commercial Businesses (Silver)"
brand: "colosus"
price: "S$684"
currency: SGD
in_stock: true
reviews_count: 1
url: https://www.desertcart.sg/products/314188142-colosus-ndl638-smart-keyless-entry-door-lock-deadbolt-touchscreen-works
store_origin: SG
region: Singapore
---

# Keyless Access -40℉ to 131℉ IP54 Waterproof COLOSUS NDL638 Smart - Keyless Entry Door Lock Deadbolt, Touchscreen Works with App to Control and Grant Access for Home, Office, Rental Properties, Commercial Businesses (Silver)

**Brand:** colosus
**Price:** S$684
**Availability:** ✅ In Stock

## Summary

> 🔒 Unlock the Future of Security!

## Quick Answers

- **What is this?** COLOSUS NDL638 Smart - Keyless Entry Door Lock Deadbolt, Touchscreen Works with App to Control and Grant Access for Home, Office, Rental Properties, Commercial Businesses (Silver) by colosus
- **How much does it cost?** S$684 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/314188142-colosus-ndl638-smart-keyless-entry-door-lock-deadbolt-touchscreen-works)

## Best For

- colosus enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted from durable zinc alloy, ready for any environment.
- • **Smart Control:** Manage access remotely with our intuitive app.
- • **Sleek & Secure:** Modern silver finish that complements any door while ensuring safety.
- • **Unlock Your World:** Experience seamless entry with 4 versatile access modes.
- • **Support at Your Fingertips:** Enjoy 7-day a week customer support from our friendly USA team.

## Overview

The COLOSUS NDL638 Smart Keyless Entry Door Lock Deadbolt offers a revolutionary approach to home and business security. With four modes of entry, including a mobile app, this durable lock is designed to withstand harsh conditions while providing reliable access control. Enjoy peace of mind with 24/7 customer support and a sleek design that fits any setting.

## Description

COLOSUS NDL638 Smart - Keyless Entry Door Lock Deadbolt, Touchscreen Works with App to Control and Grant Access for Home, Office, Rental Properties, Commercial Businesses (Silver)

## Features

- YOUR HOME/BUSINESS ESSENTIAL – With our smart door lock, losing, carrying, replacing, or forgetting your keys will be a thing of the past.
- EASY KEYLESS ACCESS – 4 different modes of entry are provided for flexibility of access; unlock with PIN code, RFID card, App to Control, and physical key.
- ENGLISH SPEAKING CUSTOMER SUPPORT – Our friendly Support Team is based in the USA and are available 7 DAYS A WEEK to help answer all your questions regarding installation, programming, and troubleshooting.v
- Made of Zinc Alloy stainless steel that durable and secure, ready to protect homes in any location. Suitable for harsh environments. ( Waterproof Level: IP54; Operating Temp Range: -40 ℉ ~131℉ )

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Colosus |
| Package Dimensions | 23.62 x 21.84 x 11.18 cm; 1.68 kg |
| Colour | Silver |
| Material | Zinc |
| Shape | Rectangular |
| Number of Pieces | 1 |
| Special Features | Durable |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 1.68 kg |

## Images

![COLOSUS NDL638 Smart - Keyless Entry Door Lock Deadbolt, Touchscreen Works with App to Control and Grant Access for Home, Office, Rental Properties, Commercial Businesses (Silver) - Image 1](https://m.media-amazon.com/images/I/51dnOx406kS.jpg)
![COLOSUS NDL638 Smart - Keyless Entry Door Lock Deadbolt, Touchscreen Works with App to Control and Grant Access for Home, Office, Rental Properties, Commercial Businesses (Silver) - Image 2](https://m.media-amazon.com/images/I/71QCml4AAkS.jpg)
![COLOSUS NDL638 Smart - Keyless Entry Door Lock Deadbolt, Touchscreen Works with App to Control and Grant Access for Home, Office, Rental Properties, Commercial Businesses (Silver) - Image 3](https://m.media-amazon.com/images/I/81RtCBBQ-TS.jpg)
![COLOSUS NDL638 Smart - Keyless Entry Door Lock Deadbolt, Touchscreen Works with App to Control and Grant Access for Home, Office, Rental Properties, Commercial Businesses (Silver) - Image 4](https://m.media-amazon.com/images/I/916a0WEviqS.jpg)
![COLOSUS NDL638 Smart - Keyless Entry Door Lock Deadbolt, Touchscreen Works with App to Control and Grant Access for Home, Office, Rental Properties, Commercial Businesses (Silver) - Image 5](https://m.media-amazon.com/images/I/91JtMLjgqkS.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Easy to install and convenient to use!
  

*by M***G on Reviewed in the United States on 6 April 2022*

I installed the smart door lock I bought on Amazon yesterday, and the experience was great! The installation is relatively smooth, similar to installing a regular door lock. After downloading the TT Lock APP, it is super convenient to setup the lock’s features. Whether it is setting the password or other relevant function settings of the door lock, it can all be completed through the TT-Lock APP from a phone with a few touches.  Using password, touch card or mobile phone to open the door is very convenient! I do not need to remember to bring my key anymore whenever I go out!  Overall, I am very satisfied with this lock! Thanks!

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sg/products/314188142-colosus-ndl638-smart-keyless-entry-door-lock-deadbolt-touchscreen-works](https://www.desertcart.sg/products/314188142-colosus-ndl638-smart-keyless-entry-door-lock-deadbolt-touchscreen-works)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-24*