---
product_id: 125857031
title: "Blackt Electrotech BT-31CM 360 Degree Mini PIR Ceiling Mounted Motion Sensor with Light Sensor (Standard Size)"
brand: "blackt electrotech"
price: "NT$24"
currency: TWD
in_stock: false
reviews_count: 8
url: https://www.desertcart.tw/products/125857031-blackt-electrotech-bt-31cm-360-degree-mini-pir-ceiling-mounted
store_origin: TW
region: Taiwan
---

# 100W max output 75mm compact size 360° full coverage Blackt Electrotech BT-31CM 360 Degree Mini PIR Ceiling Mounted Motion Sensor with Light Sensor (Standard Size)

**Brand:** blackt electrotech
**Price:** NT$24
**Availability:** ❌ Out of Stock

## Summary

> 🔍 Elevate your space with smart, seamless motion sensing!

## Quick Answers

- **What is this?** Blackt Electrotech BT-31CM 360 Degree Mini PIR Ceiling Mounted Motion Sensor with Light Sensor (Standard Size) by blackt electrotech
- **How much does it cost?** NT$24 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/125857031-blackt-electrotech-bt-31cm-360-degree-mini-pir-ceiling-mounted)

## 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

- • **Compact & Discreet:** Sleek 75mm diameter design blends effortlessly into any ceiling, perfect for modern spaces.
- • **Powerful & Efficient:** Supports up to 100W output on standard 230V AC, ensuring reliable performance without compromise.
- • **Adjustable Sensitivity:** Customize light activation anytime—day or night—to fit your lifestyle and save energy.
- • **Seamless 360° Detection:** Catch every movement with full-circle PIR sensing for ultimate security and automation.
- • **Versatile Security & Automation:** Ideal for residential and commercial use—boost your smart home or office with ease.

## Overview

The Blackt Electrotech BT-31CM is a compact, ceiling-mounted PIR motion sensor with 360-degree detection and adjustable sensitivity. Operating on 230V AC, it supports up to 100W output, making it perfect for residential and commercial security, automation, and energy management. Its sleek 75mm diameter design ensures discreet installation while delivering reliable, full-coverage motion detection up to 5 meters.

## Description

Full description not available

## Features

- Size: 75 mm diameter
- Detecting distance : 0 to 5 Mtr
- Sensitivity Adjustable: Turn On Lights during Day or nights
- 230 Volt AC operated Input & output
- Output wattage : 100 Watt

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Blackt Electrotech |
| Colour | White |
| Power Source | Corded Electric |
| Item Weight | 60 Grams |
| Maximum Range | 5 metres |
| Mounting Type | Ceiling Mount |
| Battery Description | battery not included |
| Compatible Devices | Light |
| Recommended Uses For Product | Residential Security, Commercial Security, Automation, Energy Management |
| Manufacturer | Blackt Electrotech |
| UPC | 710918665481 |
| Item part number | BT-31440 |
| Product Dimensions | 8 x 8 x 4 cm; 60 g |
| ASIN | B07PS21W18 |

## Product Details

- **Brand:** Blackt Electrotech
- **Colour:** White
- **Power Source:** Corded Electric
- **Item Weight:** 60 Grams
- **Maximum Range:** 5 metres

## Images

![Blackt Electrotech BT-31CM 360 Degree Mini PIR Ceiling Mounted Motion Sensor with Light Sensor (Standard Size) - Image 1](https://m.media-amazon.com/images/I/31N04caDaJL.jpg)
![Blackt Electrotech BT-31CM 360 Degree Mini PIR Ceiling Mounted Motion Sensor with Light Sensor (Standard Size) - Image 2](https://m.media-amazon.com/images/I/31ehks8oLeL.jpg)
![Blackt Electrotech BT-31CM 360 Degree Mini PIR Ceiling Mounted Motion Sensor with Light Sensor (Standard Size) - Image 3](https://m.media-amazon.com/images/I/51foI5c5oGL.jpg)
![Blackt Electrotech BT-31CM 360 Degree Mini PIR Ceiling Mounted Motion Sensor with Light Sensor (Standard Size) - Image 4](https://m.media-amazon.com/images/I/518amWLGfnL.jpg)
![Blackt Electrotech BT-31CM 360 Degree Mini PIR Ceiling Mounted Motion Sensor with Light Sensor (Standard Size) - Image 5](https://m.media-amazon.com/images/I/51i++YsadDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by M***U on 21 August 2023*

Good

### ⭐⭐⭐⭐ Working fine
*by A***R on 15 December 2023*

Great product working fine sensor

### ⭐ Sensor does not respond well
*by A***R on 21 September 2020*

totally dislike this product. wanted to use this in my parking lot but the product doesnot function properly.

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**Shop now:** [https://www.desertcart.tw/products/125857031-blackt-electrotech-bt-31cm-360-degree-mini-pir-ceiling-mounted](https://www.desertcart.tw/products/125857031-blackt-electrotech-bt-31cm-360-degree-mini-pir-ceiling-mounted)

---

*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-10-20*