---
product_id: 541528781
title: "Shelly Blu Door/Window Black - Smart Bluetooth Montion Sensor Alarm, Home Security, Remote Control Detector, App Alerts, Alexa & Google Home, Gateway Required, Scene Activation, Lux Sensor"
brand: "shelly"
price: "R1404"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/541528781-shelly-blu-door-window-black-smart-bluetooth-montion-sensor-alarm
store_origin: ZA
region: South Africa
---

# sub-100ms response time 30m wireless range 5-year battery life Shelly Blu Door/Window Black - Smart Bluetooth Montion Sensor Alarm, Home Security, Remote Control Detector, App Alerts, Alexa & Google Home, Gateway Required, Scene Activation, Lux Sensor

**Brand:** shelly
**Price:** R1404
**Availability:** ✅ In Stock

## Summary

> 🔒 Stay one step ahead with Shelly Blu — your silent guardian in sleek black.

## Quick Answers

- **What is this?** Shelly Blu Door/Window Black - Smart Bluetooth Montion Sensor Alarm, Home Security, Remote Control Detector, App Alerts, Alexa & Google Home, Gateway Required, Scene Activation, Lux Sensor by shelly
- **How much does it cost?** R1404 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/541528781-shelly-blu-door-window-black-smart-bluetooth-montion-sensor-alarm)

## Best For

- shelly enthusiasts

## Why This Product

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

## Key Features

- • **Long-Lasting Power:** Forget frequent battery swaps with a robust 5-year CR2032 lithium battery life.
- • **Ultra-Compact Design:** Sleek, discreet sensor fits seamlessly into any door or window frame without disrupting your décor.
- • **Reliable Connectivity:** Stable Bluetooth connection with up to 30 meters range ensures your alerts never miss a beat.
- • **Smart Entry Monitoring:** Instant alerts on door/window openings, tilt, and light changes keep you ahead of any security breach.
- • **Seamless Voice & App Control:** Effortlessly manage your home security from anywhere via Shelly Smart Control app or Alexa & Google Home.

## Overview

The Shelly Blu Door/Window Black is a smart Bluetooth motion sensor alarm designed for professional-grade home security. Featuring ultra-compact design, 5-year battery life, and lightning-fast sub-100ms response, it detects door/window openings, tilt, and luminosity changes. Compatible with Alexa, Google Home, and controlled via the Shelly Smart Control app, it requires a Shelly BLU Gateway or compatible Shelly device for seamless integration. With a 30-meter wireless range and scene activation capabilities, it’s the perfect smart security upgrade for the modern connected home.

## Description

Shop Shelly Blu Door/Window Black - Smart Bluetooth Montion Sensor Alarm, Home Security, Remote Control Detector, App Alerts, Alexa & Google Home, Gateway Required, Scene Activation, Lux Sensor. Free delivery on eligible orders of £20 or more.

## Features

- 𝗦𝗺𝗮𝗿𝘁 𝗘𝗻𝘁𝗿𝘆 𝗠𝗼𝗻𝗶𝘁𝗼𝗿𝗶𝗻𝗴: Detects and reports door/window openings, tilt levels, and luminosity for reliable automation
- 𝗨𝗹𝘁𝗿𝗮-𝗖𝗼𝗺𝗽𝗮𝗰𝘁 𝗗𝗲𝘀𝗶𝗴𝗻: Discreet and easy to install in any room or door/window frame
- 𝗟𝗼𝗻𝗴 𝗕𝗮𝘁𝘁𝗲𝗿𝘆 𝗟𝗶𝗳𝗲 & 𝗙𝗮𝘀𝘁 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗲: Runs up to 5 years on a CR2032 battery with reaction time under 100 ms
- 𝗚𝗮𝘁𝗲𝘄𝗮𝘆 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗱: A Shelly BLU Gateway or any Shelly Plus, Pro, Gen3 or Gen4 device (excluding sensors) is needed to use this device with the Shelly Smart Control app or any home automation system
- 𝗔𝗽𝗽 & 𝗩𝗼𝗶𝗰𝗲 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: Control from anywhere using the Shelly Smart Control app or voice assistants like Alexa, Google Home, or SmartThings - 𝗕𝗹𝘂𝗲𝘁𝗼𝗼𝘁𝗵 𝗚𝗮𝘁𝗲𝘄𝗮𝘆 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗱

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C717KCK5 |
| Alert Type | entry |
| Antenna Location | Door sensor, window sensor, advanced sensor |
| Battery Average Life | 5 years |
| Battery Cell Composition | Lithium Ion |
| Best Sellers Rank | 96,557 in DIY & Tools ( See Top 100 in DIY & Tools ) 153 in Home Security Door & Window Sensors |
| Brand | Shelly |
| Colour | Black |
| Compatible Devices | Light, Security System, Smart Home Hub |
| Control Method | App |
| Customer Reviews | 3.9 3.9 out of 5 stars (1,529) |
| EU Spare Part Availability Duration | 2 Years |
| Global Trade Identification Number | 03800235266618 |
| Included Components | 1x Shelly Blu Door/Window Black |
| Item Dimensions | 95 x 2 x 5 centimetres |
| Item Type Name | Door/Window detector |
| Item Weight | 22 Grams |
| Manufacturer | Shelly Europe |
| Maximum Range | 30 Metres |
| Model Number | 3800235266618 |
| Network Connectivity Technology | Wireless |
| Part Number | 661 |
| Power source | Battery Powered |
| Unit Count | 1.0 count |
| Voltage | 11 |

## Product Details

- **Brand:** Shelly
- **Colour:** Black
- **Compatible devices:** Light, Security System, Smart Home Hub
- **Item dimensions L x W x H:** 95 x 2 x 5 centimetres
- **Power source:** Battery Powered

## Images

![Shelly Blu Door/Window Black - Smart Bluetooth Montion Sensor Alarm, Home Security, Remote Control Detector, App Alerts, Alexa & Google Home, Gateway Required, Scene Activation, Lux Sensor - Image 1](https://m.media-amazon.com/images/I/51V+sSTCC6L.jpg)
![Shelly Blu Door/Window Black - Smart Bluetooth Montion Sensor Alarm, Home Security, Remote Control Detector, App Alerts, Alexa & Google Home, Gateway Required, Scene Activation, Lux Sensor - Image 2](https://m.media-amazon.com/images/I/21NPW99HxFL.jpg)
![Shelly Blu Door/Window Black - Smart Bluetooth Montion Sensor Alarm, Home Security, Remote Control Detector, App Alerts, Alexa & Google Home, Gateway Required, Scene Activation, Lux Sensor - Image 3](https://m.media-amazon.com/images/I/617UivP5fFL.jpg)
![Shelly Blu Door/Window Black - Smart Bluetooth Montion Sensor Alarm, Home Security, Remote Control Detector, App Alerts, Alexa & Google Home, Gateway Required, Scene Activation, Lux Sensor - Image 4](https://m.media-amazon.com/images/I/519hOfHjOXL.jpg)
![Shelly Blu Door/Window Black - Smart Bluetooth Montion Sensor Alarm, Home Security, Remote Control Detector, App Alerts, Alexa & Google Home, Gateway Required, Scene Activation, Lux Sensor - Image 5](https://m.media-amazon.com/images/I/318HaDdH91L.jpg)

## Available Options

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

## Questions & Answers

**Q: Shelly BLU Door/Window inclusion failed. What should I do?**
A: Download the Shelly BLE Debug APP and proceed with OTA FW update from there. Activate the Bluetooth gateway, and then retry inclusion to Shelly Smart Control app. For further help, turn to support.shelly.cloud.

**Q: Shelly BLU Door/Window battery is draining quickly?**
A: The device might have stuck in bootloader mode. Remove it from your Bluetooth settings and perform manual update. Insert the battery into your device and then run slow OTA update in Shelly Debug App.

**Q: Do I need a gateway for my Shelly BLU Door/Window?**
A: To use this device with the Shelly Smart Control app, a gateway is required. Compatible gateways are Shelly BLU Gateway, or any Shelly Plus, Pro or Gen3 device (excluding sensors).

**Q: Sensor fails to detect correct door/window position. What should I do?**
A: Ensure your device's firmware is up-to-date and that it's installed level, not tilted. For further assistance, contact our support team at support.shelly.cloud.

**Q: Shelly BLU Motion is unresponsive after a firmware update?**
A: Remove ("Forget") Shelly BLU Door/Window from Bluetooth settings. Open Shelly BLE Debug App, insert the battery, and select the device. Start a slow OTA update. If it doesn’t appear, press the button briefly before reinserting the battery.

## Frequently Bought Together

- Shelly Blu Door/Window Black - Smart Bluetooth-Operated Montion Sensor Alarm, Home Security Remote Control Detector, App alerts, Alexa & Google Home Compatibility, Scene activation, Lux Sensor
- Shelly BLU H&T Black - Bluetooth Temperature & Humidity Sensor, Smart Indoor/Outdoor Thermometer and Hygrometer, IP54 rated, Remote control with app, Free data storage

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**Shop now:** [https://www.desertcart.co.za/products/541528781-shelly-blu-door-window-black-smart-bluetooth-montion-sensor-alarm](https://www.desertcart.co.za/products/541528781-shelly-blu-door-window-black-smart-bluetooth-montion-sensor-alarm)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-09-16*