--- 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: "€ 37.52" currency: EUR in_stock: true reviews_count: 5 category: "Blackt Electrotech" url: https://www.desertcart.gr/products/627349877-blackt-electrotech-bt31m1-microwave-radar-motion-sensor-occupancy-body-motion store_origin: GR region: Greece --- # 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:** € 37.52 **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?** € 37.52 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/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. Review: 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. Review: 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. ## 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 | | ASIN | B07PNL65WN | | Antenna Location | Residential Automation, Energy Management | | Battery Description | Battery not included | | Brand | Blackt Electrotech | | Color | White | | Compatible Devices | Lighting Systems, Appliances | | Customer Reviews | 4.1 4.1 out of 5 stars (808) | | Customer reviews | 4.1 4.1 out of 5 stars (808) | | Date First Available | 14 March 2019 | | Frequency | 50 Hz | | Item Weight | 80 Grams | | Item model number | BT31m1 | | Manufacturer | Blackt Electrotech | | Manufacturer | Blackt Electrotech | | Maximum Range | 8 Meters | | Mfr Part Number | BT-31490 | | Model Number | BT31m1 | | Mounting Type | Wall Mount | | Power Source | Corded Electric | | Product Dimensions | 6 x 5 x 3 cm; 80 g | | UPC | 710918665535 | | Unit Count | 1.00 Count | ## 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 ### ⭐⭐⭐⭐ Review *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. ### ⭐⭐⭐⭐⭐ Review *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. ### ⭐⭐⭐ Review *by J***H on 5 September 2022* Very disappointed that Item is not working at all, ordered for replacement as refund option is not available. Vendor must check items before dispatch. In such case negative ratings should be available in Amazon. Edit: received replacement today, sensor working perfectly. Will update review after using few days ## 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.gr/products/627349877-blackt-electrotech-bt31m1-microwave-radar-motion-sensor-occupancy-body-motion](https://www.desertcart.gr/products/627349877-blackt-electrotech-bt31m1-microwave-radar-motion-sensor-occupancy-body-motion) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-06-04*