--- product_id: 654982497 title: "(BT31MHF) Microwave Radar Sensor Switch Ceiling Mounted Occupancy Motion Detector for Auto Lighting Control (Long Range Sensor)" brand: "blackt electrotech" price: "162 zł" currency: PLN in_stock: true reviews_count: 3 category: "Blackt Electrotech" url: https://www.desertcart.pl/products/654982497-bt31mhf-microwave-radar-sensor-switch-ceiling-mounted-occupancy-motion-detector store_origin: PL region: Poland --- # 1200W heavy-duty load 360° full coverage 10s-15min customizable delay (BT31MHF) Microwave Radar Sensor Switch Ceiling Mounted Occupancy Motion Detector for Auto Lighting Control (Long Range Sensor) **Brand:** blackt electrotech **Price:** 162 zł **Availability:** ✅ In Stock ## Summary > 🕵️‍♂️ Detect. Illuminate. Dominate your space with smart motion control. ## Quick Answers - **What is this?** (BT31MHF) Microwave Radar Sensor Switch Ceiling Mounted Occupancy Motion Detector for Auto Lighting Control (Long Range Sensor) by blackt electrotech - **How much does it cost?** 162 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/654982497-bt31mhf-microwave-radar-sensor-switch-ceiling-mounted-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 - • **Smart Energy Saver:** Automatically powers lights on/off based on occupancy, slashing energy waste and costs. - • **360° Panoramic Detection:** Seamlessly covers large spaces with full-circle motion sensing for zero blind spots. - • **Flexible Ceiling Mounting:** Install anywhere from 4 to 15 meters high, adapting effortlessly to diverse spaces. - • **Robust 1200W Load Capacity:** Supports powerful lighting systems, perfect for industrial and commercial setups. - • **Tailored Sensitivity & Timing:** Adjust detection range and light delay to match your unique environment and schedule. ## Overview The Blackt Electrotech BT31MHF Microwave Radar Sensor Switch is a ceiling-mounted occupancy detector designed for automatic lighting control in large commercial and industrial spaces. Featuring a 360° detection range and up to 20 meters sensing distance, it supports heavy-duty lighting loads up to 1200W. With customizable time delay and light sensitivity settings, plus flexible installation heights from 4 to 15 meters, it ensures energy-efficient, hands-free lighting tailored to your environment. ## Description Product Description Blackt Electrotech (BT31MHF) Microwave Radar Sensor Switch – Advanced Occupancy Detection for Automatic Lighting Control The Blackt Electrotech (BT31MHF) Microwave Radar Sensor Switch is a cutting-edge solution for automatic lighting control in both residential and commercial spaces. Designed for ceiling mounting, this occupancy motion detector uses advanced microwave radar technology to detect movement with impressive accuracy, ensuring lights are automatically turned on or off when needed. Perfect for rooms, hallways, offices, or any area where efficient lighting control is essential, the BT31MHF helps reduce energy consumption and enhances convenience by eliminating the need for manual switches. Long-Range Detection for Seamless Operation One of the standout features of the BT31MHF is its long-range motion detection capabilities. The microwave radar sensor can detect movement over an extended range, making it ideal for larger rooms, corridors, and spaces with higher ceilings. Whether you're walking into a room or passing by, the sensor will detect motion and activate the lights without any need for physical contact with a switch. This long-range capability ensures that the lights turn on as soon as you enter the area and turn off after you leave, promoting energy efficiency while maintaining comfort. Energy-Saving Smart Lighting Solution With the Blackt Electrotech BT31MHF Microwave Radar Sensor Switch, you can significantly reduce energy wastage by ensuring that lights are only on when the room is occupied. The sensor detects motion in real-time and turns the lights on when it senses activity, and it will automatically turn off the lights when no movement is detected for a set period. This energy-saving feature is particularly beneficial in spaces like offices, bathrooms, hallways, and storage rooms, where lights are often left on unnecessarily, leading to higher electricity costs. Review: Excellent - Good working Review: Sensitivity of product. - Not satisfied with product. It trigger without any movement of object. I have installed it above solar panel but even there are no birds it trigger unnecessary. ## Features - 🌀 360° Detection Range: Offers a full 360° detection angle and long-range motion sensing, ideal for covering large areas like warhouse, showrooms, outdoor, largerooting area industrail. - ⚡ High Power Capacity: Handles up to 1200W loads, making it ideal for heavy-duty lighting systems and ensuring reliable performance. - 🕒 Customizable Settings: Adjust by DIP button the time delay (10 seconds to 15 minutes) and light sensitivity (10-2000 lux) to fit your needs, with a detection range extending 20 meters from a height of 15 meters. - 🔧 Flexible Installation Height: Easily install at adjustable heights between 4 and 15 meters, ensuring adaptability for diverse applications. - 🌟 Automatic Lighting Control: The Blackt Electrotech BT31MHF Microwave Radar Sensor Switch activates lights automatically upon motion detection, ensuring energy-efficient and hassle-free lighting. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DCTLPHTN | | Battery Description | battery not included | | Best Sellers Rank | #42,482 in Home Improvement ( See Top 100 in Home Improvement ) #82 in Motion Detectors | | Brand | Blackt Electrotech | | Built-In Media | Installtion back plat, Screw, manaul | | Colour | White | | Compatible Devices | Light | | Country of Origin | China | | Customer Reviews | 4.4 out of 5 stars 11 Reviews | | Importer Contact Information | Blackt Electrotech | | Item Dimensions D x W x H | 100D x 30W x 100H Millimeters | | Item Type Name | Motion sensor | | Item Weight | 160 Grams | | Manufacturer | Blackt Electrotech | | Maximum Range | 20 metres | | Model Number | BT31M | | Mounting Type | Ceiling Mount | | Packer Contact Information | Blackt Electrotech | | Power Source | Corded Electric | | Unit Count | 1 Count | ## Product Details - **Brand:** Blackt Electrotech - **Colour:** White - **Item Weight:** 160 Grams - **Maximum Range:** 20 metres - **Power Source:** Corded Electric ## Images ![(BT31MHF) Microwave Radar Sensor Switch Ceiling Mounted Occupancy Motion Detector for Auto Lighting Control (Long Range Sensor) - Image 1](https://m.media-amazon.com/images/I/512AGiFoW1L.jpg) ![(BT31MHF) Microwave Radar Sensor Switch Ceiling Mounted Occupancy Motion Detector for Auto Lighting Control (Long Range Sensor) - Image 2](https://m.media-amazon.com/images/I/71gt1xJbcoL.jpg) ![(BT31MHF) Microwave Radar Sensor Switch Ceiling Mounted Occupancy Motion Detector for Auto Lighting Control (Long Range Sensor) - Image 3](https://m.media-amazon.com/images/I/81ANmoJWrUL.jpg) ![(BT31MHF) Microwave Radar Sensor Switch Ceiling Mounted Occupancy Motion Detector for Auto Lighting Control (Long Range Sensor) - Image 4](https://m.media-amazon.com/images/I/81XaDa-22XL.jpg) ![(BT31MHF) Microwave Radar Sensor Switch Ceiling Mounted Occupancy Motion Detector for Auto Lighting Control (Long Range Sensor) - Image 5](https://m.media-amazon.com/images/I/61hREWjPHNL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent *by S***H on 8 September 2025* Good working ### ⭐⭐ Sensitivity of product. *by N***I on 16 August 2025* Not satisfied with product. It trigger without any movement of object. I have installed it above solar panel but even there are no birds it trigger unnecessary. ### ⭐⭐⭐⭐⭐ Good for Large space *by D***A on 16 October 2024* This sensor works great. It detects motion and turns on lights automatically, making the space safer and more efficient. ## Frequently Bought Together - Blackt Electrotech (BT31MHF) Microwave Radar Sensor Switch Ceiling Mounted Occupancy Motion Detector for Auto Lighting Control (Long Range Sensor) - Blackt Electrotech BT31C : PIR Motion Sensor Ceiling Mounted White Round Shape (2-Year Warranty) (Regular) --- ## 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.pl/products/654982497-bt31mhf-microwave-radar-sensor-switch-ceiling-mounted-occupancy-motion-detector](https://www.desertcart.pl/products/654982497-bt31mhf-microwave-radar-sensor-switch-ceiling-mounted-occupancy-motion-detector) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-10*