--- product_id: 64722854 title: "Blackt Electrotech BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White)" brand: "blackt electrotech" price: "€ 18.21" currency: EUR in_stock: true reviews_count: 8 category: "Blackt Electrotech" url: https://www.desertcart.hr/products/64722854-blackt-electrotech-bt31fc-fall-recessed-ceiling-mounted-plastic-energy-saving store_origin: HR region: Croatia --- # 10s–7min adjustable delay 1200W max load, multi-light compatible 360° full motion detection Blackt Electrotech BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White) **Brand:** blackt electrotech **Price:** € 18.21 **Availability:** ✅ In Stock ## Summary > ⚡ Light up smartly, save effortlessly — your space’s silent guardian! ## Quick Answers - **What is this?** Blackt Electrotech BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White) by blackt electrotech - **How much does it cost?** € 18.21 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/64722854-blackt-electrotech-bt31fc-fall-recessed-ceiling-mounted-plastic-energy-saving) ## 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 - • **Reliable & Durable:** Up to 7 meters detection range with 0.6–1 m/s speed sensitivity plus an 18-month warranty for peace of mind. - • **Tailored Time Control:** Customize your lighting delay from 10 seconds up to 7 minutes for ultimate convenience. - • **Seamless 360° Coverage:** Detects motion from every angle—never miss a movement in your space. - • **Powerhouse Compatibility:** Supports up to 1200W load including LEDs, CFLs, incandescent lamps, and fans—versatility meets efficiency. - • **Smart Ambient Light Sensing:** Automatically activates only when it’s dark (3 to 2000 LUX adjustable), maximizing energy savings without sacrificing comfort. ## Overview The Blackt Electrotech BT31FC is a ceiling-mounted PIR motion sensor switch designed for professional-grade energy efficiency and convenience. Featuring a 360-degree detection range, adjustable time delay (10s to 7min), and ambient light sensitivity (3–2000 LUX), it supports a wide range of lighting loads up to 1200W. Ideal for offices, homes, and commercial spaces, it ensures lights activate only when needed, reducing energy waste. Backed by an 18-month warranty, this sensor switch blends smart automation with robust performance. ## Description Product Description Blackt Electrotech PIR Motion Sensor The Product is new Energy Saving Device, it adopts good sensitivity detector, integrated ckt. It gathers automatism, convenience, Safety,Saving energy & physical functions. It works by receiving Human motion Infrared rays. Now Switch ON/OFF your Lights, Bulb,CFL, etc by AUTOMATIC Use INFRARED PIR MOTION SENSOR Life: More than 5 years Use Home Office Shops Hospitals Bathroom Corridor Step Parking area & etc Quality Control Standards Load power: Upto 300/1200W Max Ambient Light: 3-2000 (Adjuestable) Load type: Incandescent lamp, LED light, CLF, fans, etc Detecting distance: 0~7M Detecting Angle: 360 Degree. Installation Height: 2.2-4 Mtr Delay: 10 Seconds -7 Minutes (Adjustable), Motion Detection Speed: 0.6~1m/s Power Consumption (static) & 0.4(Work) Working Humidity: less than 93%RH Product Feature PIR Motion Sensor: Works by detecting human motion infrared rays Light Sensor: 3LUX~2000LUX adjustable, Can work in day and night. Time Delay: 10sec-7min adjustable, Time-Delay is added continually, when it receives the second induction signals after the first induction, it will compute time once more on the basic of the first time-delay rest. Detection Range: 3-7m adjustable, can be adjusted accordingly, item fits for large room. Product Installations Keep Sensor unit 1.6 Mtr higher from the ground level. The light, such as incandescent lamp which emits high heat should be kept from the switch aways, or it will be turn on/off voluntarily. On being fixed to the wire first time, the switch' initialization will take 1-2 minutes. It's natural for the switch to turn on/off voluntarily. When you install the switch on daytime, the Default State of the switch will make the light off.Keep the detector of the switch from illumination, & then the light will turn ON. The darker, the switch will be more sensitive. If it is not very sensitive, turn the yellow port counterclockwise with a long and thin tool to get a proper light sensitivity. Package Includes 1 x Infrared Switch Board 1 x Installations Manual Bill Review: Very good product Review: Value for money. Bulky product. - It is over all a good product. Finishing is not very good. However cable connecters are of very good quality. Product is quite bulky. I had a LED light in my ceiling before fitting perfectly. But to install it i had to do some retrofiting just to accommodate its bulky body. Still hangs out a little. Other than that working wise works great as mentioned in description. Also can be installed to a heavier load of about 800W. And just so that there is no confusion among new buyers, its NOT a light its simply just a switch that is triggered by motion. ## Features - 360-Degree Detection Range: The BT31FC Motion Sensor Switch has a 360-degree detection range, providing full coverage and ensuring that no motion goes undetected. - Adjustable Time Delay: The time delay for the motion sensor switch is adjustable, with options ranging from 10 seconds to 7 minutes, allowing for flexibility in customization. - Suitable for a Variety of Loads: The motion sensor switch is compatible with different types of loads, including incandescent lamps, LED lights, CFLs, and fans, with a maximum load capacity of 1200 watts. - Adjustable Ambient Light: With an adjustable ambient light feature ranging from 3 to 2000, the BT31FC Motion Sensor Switch can be customized to turn on lights only when it's dark, conserving energy and enhancing convenience. - High-Quality Performance: The BT31FC Motion Sensor Switch has a detecting distance of up to 7 meters and motion detection speed of 0.6~1m/s, ensuring reliable and high-quality performance. 6 - Warranty: The BT31FC Motion Sensor Switch comes with an 18-month manufacturer warranty, providing customers with peace of mind and assurance of quality. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01MTD4K9A | | Antenna Location | Residential Security, Commercial Security, Automation, Energy Management | | Battery Description | Battery not included | | Best Sellers Rank | #27,615 in Home Improvement ( See Top 100 in Home Improvement ) #48 in Motion Detectors | | Brand | Blackt Electrotech | | Built-In Media | Install by trained technician & read installation manual | | Colour | White | | Compatible Devices | other | | Country of Origin | India | | Customer Reviews | 4.0 out of 5 stars 271 Reviews | | Item Weight | 120 Grams | | Manufacturer | Blackt Electrotech | | Maximum Range | 6 metres | | Mfr Part Number | BT-41FC | | Model Number | BT-61C1 | | Mounting Type | Ceiling Mount | | Power Source | Corded Electric | ## Product Details - **Brand:** Blackt Electrotech - **Colour:** White - **Power Source:** Corded Electric - **Item Weight:** 120 Grams - **Maximum Range:** 6 metres ## Images ![Blackt Electrotech BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White) - Image 1](https://m.media-amazon.com/images/I/61FBr11Z-OL.jpg) ![Blackt Electrotech BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White) - Image 2](https://m.media-amazon.com/images/I/71cuYavWAKL.jpg) ![Blackt Electrotech BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White) - Image 3](https://m.media-amazon.com/images/I/61jX06wIFDL.jpg) ![Blackt Electrotech BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White) - Image 4](https://m.media-amazon.com/images/I/61pcI-bJIIL.jpg) ![Blackt Electrotech BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White) - Image 5](https://m.media-amazon.com/images/I/41goV2uaYFL.jpg) ## Questions & Answers **Q: What is this diameter in the base?** A: 2.5 inches Diameter appox **Q: Can I use for split air conditioner?** A: no not recommended **Q: Can it count occupancy of room?** A: No **Q: Can we use this switch for celling fan on/off ?** A: Anything if it's upto 300 watts and resistive load ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good product *by P***. on 28 February 2026* ### ⭐⭐⭐⭐ Value for money. Bulky product. *by S***T on 11 June 2020* It is over all a good product. Finishing is not very good. However cable connecters are of very good quality. Product is quite bulky. I had a LED light in my ceiling before fitting perfectly. But to install it i had to do some retrofiting just to accommodate its bulky body. Still hangs out a little. Other than that working wise works great as mentioned in description. Also can be installed to a heavier load of about 800W. And just so that there is no confusion among new buyers, its NOT a light its simply just a switch that is triggered by motion. ### ⭐⭐⭐⭐⭐ Reliable Product *by O***R on 3 March 2024* I am Using This Product For Last 5 Year and its working Perfectly fine. ## Frequently Bought Together - Blackt Electrotech BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White) - Blackt Electrotech Microwave Radar Sensor Switch - Ceiling Mounted Occupancy Motion Detector for Automatic Lighting Control (Regular Size) --- ## 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.hr/products/64722854-blackt-electrotech-bt31fc-fall-recessed-ceiling-mounted-plastic-energy-saving](https://www.desertcart.hr/products/64722854-blackt-electrotech-bt31fc-fall-recessed-ceiling-mounted-plastic-energy-saving) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-23*