---
product_id: 773995889
title: "Blackt Electrotech (BT31MR) Microwave/Radar Motion Sensor Occupancy Motion Detector for Fall Ceiling | Recessed Mini Motion Sensor Switch (1)"
brand: "blackt electrotech"
price: "RM9"
currency: MYR
in_stock: false
reviews_count: 3
url: https://www.desertcart.com.my/products/773995889-blackt-electrotech-bt31mr-microwave-radar-motion-sensor-occupancy-motion-detector
store_origin: MY
region: Malaysia
---

# 40s continuous motion delay 100-240V wide voltage range 360° full coverage detection Blackt Electrotech (BT31MR) Microwave/Radar Motion Sensor Occupancy Motion Detector for Fall Ceiling | Recessed Mini Motion Sensor Switch (1)

**Brand:** blackt electrotech
**Price:** RM9
**Availability:** ❌ Out of Stock

## Summary

> 🚨 Stay ahead of the curve with 360° smart sensing — because your space deserves the best watchful eye!

## Quick Answers

- **What is this?** Blackt Electrotech (BT31MR) Microwave/Radar Motion Sensor Occupancy Motion Detector for Fall Ceiling | Recessed Mini Motion Sensor Switch (1) by blackt electrotech
- **How much does it cost?** RM9 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/773995889-blackt-electrotech-bt31mr-microwave-radar-motion-sensor-occupancy-motion-detector)

## Best For

- blackt electrotech enthusiasts

## Why This Product

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

## Key Features

- • **360° Detection Radius:** Ensures no corner is left unmonitored with full circular coverage ideal for ceiling heights of 3-5 meters.
- • **Seamless Motion Sensing:** Keeps lights on with a 40-second delay that resets with every detected movement, eliminating dark moments.
- • **Compact & Discreet Design:** Sleek white recessed mini sensor blends seamlessly into fall ceilings, maintaining aesthetic integrity.
- • **Energy-Smart Night Operation:** Automatically activates only in low light (7-20 Lux), optimizing energy use without manual intervention.
- • **Universal Voltage Compatibility:** Works effortlessly across 100-240V AC, perfect for diverse commercial and residential setups.

## Overview

The Blackt Electrotech BT31MR is a compact, recessed ceiling-mounted microwave/radar motion sensor designed for continuous occupancy detection with a 40-second delay. It supports a wide voltage range (100-240V AC), controls loads up to 100 watts, and offers full 360° detection coverage at optimal ceiling heights of 3-5 meters. Its smart night-only activation conserves energy by operating within ambient light levels of 7-20 Lux, making it ideal for residential and commercial security, automation, and energy management.

## Description

Full description not available

## Features

- Continuous Motion Detection: Features a 40-second delay time, which restarts with each new motion detected, ensuring lights stay on as long as movement is present. Note: (This model not having any LUX & time adjustment) button.
- Wide Voltage Compatibility: Operates on AC 100-240V 50/60Hz
- Efficient Load Control: It can control up to 100 watt laod
- Comprehensive 360° Detection & Optimal Installation Height: Offers complete coverage with a 360° induction angle, perfect for ceiling installations at heights of 3-5 meters.
- Smart Day/Night Identification & Ambient Light Sensitivity: Automatically operates only at night, conserving energy, and functions effectively in ambient light levels of 7-20Lux.

## Images

![Blackt Electrotech (BT31MR) Microwave/Radar Motion Sensor Occupancy Motion Detector for Fall Ceiling | Recessed Mini Motion Sensor Switch (1) - Image 1](https://m.media-amazon.com/images/I/611dlrVB+jL.jpg)
![Blackt Electrotech (BT31MR) Microwave/Radar Motion Sensor Occupancy Motion Detector for Fall Ceiling | Recessed Mini Motion Sensor Switch (1) - Image 2](https://m.media-amazon.com/images/I/71N9Ic7fgiL.jpg)
![Blackt Electrotech (BT31MR) Microwave/Radar Motion Sensor Occupancy Motion Detector for Fall Ceiling | Recessed Mini Motion Sensor Switch (1) - Image 3](https://m.media-amazon.com/images/I/71xTlUOZUWL.jpg)
![Blackt Electrotech (BT31MR) Microwave/Radar Motion Sensor Occupancy Motion Detector for Fall Ceiling | Recessed Mini Motion Sensor Switch (1) - Image 4](https://m.media-amazon.com/images/I/81K0JJgwo9L.jpg)
![Blackt Electrotech (BT31MR) Microwave/Radar Motion Sensor Occupancy Motion Detector for Fall Ceiling | Recessed Mini Motion Sensor Switch (1) - Image 5](https://m.media-amazon.com/images/I/717xxnC9hxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by J***S on 16 March 2025*

Good

### ⭐ Fake sensor dangerous
*by G***H on 23 March 2025*

Received a completely fake sensor with a random broken Circuit board with two wires sticking out. I got lucky I checked inside the sensor before installing it. It could have exploded in my hands.

### ⭐⭐⭐⭐⭐ Regarding micro sensor
*by G***N on 15 March 2025*

Excellent

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**Shop now:** [https://www.desertcart.com.my/products/773995889-blackt-electrotech-bt31mr-microwave-radar-motion-sensor-occupancy-motion-detector](https://www.desertcart.com.my/products/773995889-blackt-electrotech-bt31mr-microwave-radar-motion-sensor-occupancy-motion-detector)

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-05*