--- product_id: 627349877 title: "Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Body Motion Detector Small Sq Shape 18 Months warrenty" brand: "blackt electrotech" price: "€ 25.89" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.pt/products/627349877-blackt-electrotech-bt31m1-microwave-radar-motion-sensor-occupancy-body-motion store_origin: PT region: Portugal --- # Adjustable timer delay 10s-12min Brightness control 0-2000 Lux Sensitivity range 1-8 meters Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Body Motion Detector Small Sq Shape 18 Months warrenty **Brand:** blackt electrotech **Price:** € 25.89 **Availability:** ✅ In Stock ## Summary > ⚡ Stay ahead with motion-activated brilliance—because your space deserves smart energy! ## Quick Answers - **What is this?** Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Body Motion Detector Small Sq Shape 18 Months warrenty by blackt electrotech - **How much does it cost?** € 25.89 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/627349877-blackt-electrotech-bt31m1-microwave-radar-motion-sensor-occupancy-body-motion) ## 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 off when no motion detected, slashing electricity bills by up to 85%. - • **Sleek & Compact Design:** Small 6x5x3 cm footprint fits discreetly anywhere—hallways, closets, bathrooms, or offices. - • **Flexible Timer Settings:** Choose delay from 10 seconds to 12 minutes to perfectly match your lifestyle and space usage. - • **Precision Motion Detection:** Customizable 1-8m sensitivity and wide 360° ceiling/180° wall coverage to avoid false triggers. - • **Adaptive Brightness Control:** Set light activation only in low-light conditions with adjustable 0-2000 Lux threshold. ## Overview The Blackt Electrotech BT31M1 is a compact, wall-mount microwave radar motion sensor designed for smart occupancy detection. Featuring adjustable sensitivity up to 8 meters, a 360° ceiling and 180° wall detection angle, and customizable brightness and timer settings, it ensures efficient, automatic lighting control. With an 18-month warranty and energy-saving capabilities that reduce electricity use by up to 85%, it’s ideal for modern homes and offices seeking intelligent automation. ## Description There is a timer function,when people are away and no more moving in the room, microwave will stop working automatically to save electricity. When you come back again, it will turn ON. ## Features - There is a timer function,when people are away and no more moving in the room, microwave will stop working automatically to save electricity. When you come back again, it will turn ON. - The sensitivity can be adjusted from 1 to 8 meters so it will not issue false alarms when passing in front of the sensor. The light brightness can be adjustable from 0 - 2000 Lux setting. With a timer delay function 10 Sec to 12 Min from the previous usage time, it can avoid over-usage of electricity. - With 360 degree ceiling and 180 degree wall detection angle, perfect for anywhere that you need to turn a light on automatically when someone enters the room or area, such as the hallway, corridor, bathroom, closet etc. These energy-saving lights product saves 85% on electricity costs. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B07PNL65WN | | Date First Available | 14 March 2019 | | Item Model Number | BT31m1 | | Manufacturer | Blackt Electrotech | | Product Dimensions | 6 x 5 x 3 cm; 80 g | ## Product Details - **Brand:** Blackt Electrotech - **Colour:** White - **Item weight:** 80 Grams - **Maximum range:** 8 Meters - **Power source:** Corded Electric ## Images ![Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Body Motion Detector Small Sq Shape 18 Months warrenty - Image 1](https://m.media-amazon.com/images/I/51NzEKCdFsL.jpg) ![Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Body Motion Detector Small Sq Shape 18 Months warrenty - Image 2](https://m.media-amazon.com/images/I/7153Le5jGfL.jpg) ![Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Body Motion Detector Small Sq Shape 18 Months warrenty - Image 3](https://m.media-amazon.com/images/I/71cgNJ11udL.jpg) ![Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Body Motion Detector Small Sq Shape 18 Months warrenty - Image 4](https://m.media-amazon.com/images/I/71rGXCDOkBL.jpg) ![Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Body Motion Detector Small Sq Shape 18 Months warrenty - Image 5](https://m.media-amazon.com/images/I/61qfFeqCB7L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Trusted product *by on Reviewed in India 28 May 2026* Good product as per price, working well. ### ⭐⭐⭐⭐ Good one *by on Reviewed in India 27 April 2026* Product is good...but with fan on it doesn't work...should be given on off button as well... ### ⭐⭐⭐ Okay *by on Reviewed in India 20 June 2026* Okay ## Frequently Bought Together - Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Body Motion Detector Small Sq Shape 18 Months warrenty - Quick Sense (Qs-H1) 220v -118 DB Hooter Security Alarm for Security, Loud Sound(300-400 M) - Quick Sense (Qs-H2) 220v -110 DB Hooter Security Alarm for Bank Loud Sound --- ## 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.pt/products/627349877-blackt-electrotech-bt31m1-microwave-radar-motion-sensor-occupancy-body-motion](https://www.desertcart.pt/products/627349877-blackt-electrotech-bt31m1-microwave-radar-motion-sensor-occupancy-body-motion) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-26*