---
product_id: 143831286
title: "Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Motion Detector Small Sq Shape 18 Months warrenty (1)"
brand: "blackt electrotech"
price: "70 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Blackt Electrotech"
url: https://www.desertcart.pl/products/143831286-blackt-electrotech-bt31m1-microwave-radar-motion-sensor-occupancy-motion-detector
store_origin: PL
region: Poland
---

# 1200W max load capacity 8m adjustable detection range 360° ceiling & 180° wall coverage Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Motion Detector Small Sq Shape 18 Months warrenty (1)

**Brand:** blackt electrotech
**Price:** 70 zł
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your space with smart sensing — never waste energy or miss a beat!

## Quick Answers

- **What is this?** Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Motion Detector Small Sq Shape 18 Months warrenty (1) by blackt electrotech
- **How much does it cost?** 70 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/143831286-blackt-electrotech-bt31m1-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

- • **Trusted Durability:** Backed by an 18-month warranty, guaranteeing reliable performance and peace of mind.
- • **Seamless 360° Coverage:** Wide detection angles ensure no corner is left unmonitored—perfect for hallways, bathrooms, and closets.
- • **Effortless Energy Savings:** Automatically powers off lights/appliances when no motion is detected, slashing your electricity bills.
- • **Compact, Concealed Installation:** Small 12x12x6.5 cm design fits discreetly inside switchboards or behind POP sheets for a sleek look.
- • **Precision Detection, Zero False Alarms:** Adjust sensitivity from 1 to 8 meters and brightness up to 2000 Lux for tailored, accurate sensing.

## Overview

The Blackt Electrotech BT31M1 Microwave/Radar Motion Sensor combines advanced radar technology with customizable sensitivity and brightness settings to deliver precise, wide-angle motion detection. Its compact design allows for discreet installation, while supporting high load capacities up to 1200W. Ideal for energy-saving automation in homes and offices, it comes with an 18-month warranty ensuring dependable, long-term use.

## Description

Product Description Advanced Microwave/Radar Motion Sensing Technology The Blackt Electrotech BT31M1 is designed with cutting-edge microwave/radar technology to ensure highly accurate motion detection. Unlike traditional infrared sensors, this sensor can detect movement through thin non-metallic objects like glass, plastic, and thin walls, making it perfect for versatile indoor applications. Its small square shape ensures a discreet installation without compromising performance. Easy Installation & Versatile Applications The BT31M1 is simple to install and compatible with a wide range of lighting and electrical systems. Whether for home automation, security enhancement, or energy-saving projects, this microwave/radar motion sensor is the perfect solution for modern living. Wide Detection Range & Sensitivity The BT31M1 offers a broad detection angle and range, making it capable of covering large areas with minimal blind spots. It can sense even slight movements, ensuring reliable detection in offices, corridors, restrooms, and other frequently used areas. Adjustable settings allow you to fine-tune its sensitivity to suit your environment.

Review: Great product - have been using these microwave sensors for about 6 months now and they are very useful and works superbly. They can be adjusted to your needs in terms of sensitivity, time delay, and range. I have 3 such sensors at home conveniently placed where not frequent movement happens.. and kids sometimes forget to switch off lights.. this is a major power saver..
Review: Excellent product - Product is awesome. Just gave it four stars as when it starts it relays power to the load. Thereby making it unusable with siren systems even light bulb lights up for the durationnof time set.

## Features

- 🌟 [Automatic Energy Saving]: Automatically turns off lights or appliances when no motion is detected, saving electricity effortlessly.
- 🔍 [Adjustable Sensitivity & Brightness]: Sensitivity can be adjusted between 1 to 8 meters, and light brightness is customizable from 0 to 2000 Lux, ensuring accurate detection without false triggers .
- 📏 [Wide Detection Angle]: Provides 360° ceiling and 180° wall detection, perfect for spaces like hallways, bathrooms, closets, and corridors.
- ⚡ [High Load Capacity]: Handles up to 1200W for incandescent lights and 300W for LED lights, compatible with most lighting setups.
- 🔧 [Compact & Versatile Design]: Small size (12x12x6.5 cm) allows installation inside switchboards or behind POP sheets. The sensor detects motion even when concealed, ensuring seamless functionality.
- 🛡️ [Reliable with Warranty]: Comes with an 18-month manufacturing warranty, ensuring dependable and worry-free usage.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07PNL65WN |
| Antenna Location | Residential Security, Automation, Energy Management |
| Battery Description | battery not included |
| Best Sellers Rank | #2,362 in Home Improvement ( See Top 100 in Home Improvement ) #5 in Motion Detectors |
| Brand | Blackt Electrotech |
| Built-In Media | Caps |
| Colour | white |
| Compatible Devices | Appliances |
| Country of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 875 Reviews |
| Frequency | 50 Hz |
| Importer Contact Information | Blackt Electrotech |
| Item Dimensions D x W x H | 60D x 40W x 60H Millimeters |
| Item Type Name | Motion sensor |
| Item Weight | 80 Grams |
| Manufacturer | Blackt Electrotech, Blackt Electrotech |
| Manufacturer Contact Information | Blackt Electrotech |
| Manufacturer Warranty Description | 18 months warranty against manufacturing defects |
| Maximum Range | 8 metres |
| Mfr Part Number | BT-31490 |
| Model Number | BT31m1 |
| Mounting Type | Wall Mount |
| Packer Contact Information | Blackt Electrotech |
| Power Source | Corded Electric |
| UPC | 710918665535 |
| Unit Count | 1.00 Count |
| Upper Temperature Rating | 45 Degrees Celsius |

## Product Details

- **Brand:** Blackt Electrotech
- **Colour:** white
- **Item Weight:** 80 Grams
- **Maximum Range:** 8 metres
- **Power Source:** Corded Electric

## Images

![Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Motion Detector Small Sq Shape 18 Months warrenty (1) - Image 1](https://m.media-amazon.com/images/I/51NzEKCdFsL.jpg)
![Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Motion Detector Small Sq Shape 18 Months warrenty (1) - Image 2](https://m.media-amazon.com/images/I/7153Le5jGfL.jpg)
![Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Motion Detector Small Sq Shape 18 Months warrenty (1) - Image 3](https://m.media-amazon.com/images/I/71cgNJ11udL.jpg)
![Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Motion Detector Small Sq Shape 18 Months warrenty (1) - Image 4](https://m.media-amazon.com/images/I/71rGXCDOkBL.jpg)
![Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Motion Detector Small Sq Shape 18 Months warrenty (1) - Image 5](https://m.media-amazon.com/images/I/61qfFeqCB7L.jpg)

## Available Options

This product comes in different **Number Of Items** options.

## Questions & Answers

**Q: Does it swich OFF when motion stops**
A: if there no motion it will turn off after presetting time i.e. 10 sec to 12 min

**Q: I need a timer switch of load 3kv for storage water geyser**
A: available on amazon, check

**Q: Is it compatible with cilining fan ?**
A: There is no fan or anything, you have to connect whatever you want as load, with operating voltage of 220V AC, load as in the label.

**Q: Why not use the motion sensor bulbs? What is the advatage of this over those bulbs?**
A: This can be used to switch on anything, not only for lights, and this is a more accurate and fast device.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by G***B on 28 May 2025*

have been using these microwave sensors for about 6 months now and they are very useful and works superbly. They can be adjusted to your needs in terms of sensitivity, time delay, and range. I have 3 such sensors at home conveniently placed where not frequent movement happens.. and kids sometimes forget to switch off lights.. this is a major power saver..

### ⭐⭐⭐⭐ Excellent product
*by J***H on 6 February 2025*

Product is awesome. Just gave it four stars as when it starts it relays power to the load. Thereby making it unusable with siren systems even light bulb lights up for the durationnof time set.

### ⭐⭐⭐⭐⭐ Very nice
*by D***� on 28 February 2025*

I love the operation of the product. It works only when it is dark if you set the LUX sensor appropriately. It turns on immediately when I open the door. However, the timer isn't accurate. Sometimes, it switches off at the set time, and a few other times, it takes a few seconds longer. The device looks a little cheap. The company definitely need an English-speaking employee to correct their English in their manual/instruction. Overall, it's a fantastic product. I will order more of them for all my lights and recommend it to all prospective buyers.

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-14*