--- product_id: 64722850 title: "Blackt Electrotech BT31C : PIR Motion Sensor Ceiling Mounted White Round Shape (2-Year Warranty) (Regular)" brand: "blackt electrotech" price: "167 kr" currency: NOK in_stock: true reviews_count: 8 url: https://www.desertcart.no/products/64722850-blackt-electrotech-bt31c-pir-motion-sensor-ceiling-mounted-white-round store_origin: NO region: Norway --- # 10s-7min adjustable delay 7m max detection range 360° sensing angle Blackt Electrotech BT31C : PIR Motion Sensor Ceiling Mounted White Round Shape (2-Year Warranty) (Regular) **Brand:** blackt electrotech **Price:** 167 kr **Availability:** ✅ In Stock ## Summary > 💡 Illuminate Smarter, Save Bigger — Never Miss a Beat with Blackt Electrotech BT31C! ## Quick Answers - **What is this?** Blackt Electrotech BT31C : PIR Motion Sensor Ceiling Mounted White Round Shape (2-Year Warranty) (Regular) by blackt electrotech - **How much does it cost?** 167 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/64722850-blackt-electrotech-bt31c-pir-motion-sensor-ceiling-mounted-white-round) ## 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 - • **Daylight Smart Activation:** Photosensitive control ensures lights only activate in low light, saving energy and avoiding daytime triggers. - • **Precision Motion Detection:** Customize detection distance up to 7 meters and enjoy seamless 360° coverage for no missed moments. - • **Tailored Sensitivity & Timing:** Adjust ambient light sensitivity (3-2000 lux) and delay time (10 seconds to 7 minutes) to fit your unique space and schedule. - • **Effortless Ceiling Installation:** Sleek, round design with easy setup backed by a 2-year warranty—upgrade your home or office with confidence. - • **Universal Appliance Compatibility:** Works flawlessly with LEDs, incandescent, fluorescent lamps, fans, and more—one sensor to rule them all. ## Overview The Blackt Electrotech BT31C is a ceiling-mounted PIR motion sensor designed for precise, energy-efficient lighting control. Featuring a 7-meter detection range and 360° sensing angle, it supports a wide range of lighting types and appliances. With adjustable delay times and ambient light sensitivity, it ensures lights activate only when needed, reducing energy waste. Easy to install and backed by a 2-year warranty, it’s perfect for modern homes and commercial spaces aiming for smart automation and sustainability. ## Description The product is new energy saving device, it adopts good sensitivity detector, integrated kit. 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, Automatic Use infrared pir motion sensor 360 Degree PIR Motion Sensor With Light Sensor (Ceiling Mounted) Operating volt: ac 220-250v 50hz-60hz. Load power: upto 300/1200w max Ambient light: 3-2000 (adjuestable) Load type: incandescent lamp, led light, clf, fans, Detecting distance: 0~7m Detecting angle: 360 degree. Installtion hight: 2.2-4 mtr Motion detetion speed: 0.6~1m/s Power cusumption:0.1w (static) & 0.4(work) Working humidity: less than 93%rh Delay: 10 seconds -7 minutes (adjustable) 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. Good solution for energy saving & easy in installation. and Delay adjustment: 10 seconds - 7 minutes & adjustable lux: turn on the lights during the day or night. Using the automatic control product of infrared technology,when people walk into the sensor range,and the sensor can detect the spectral change of the human body infrared ray,during this time,the switch will connect the load automatically until the person leaves the sensor range. 2, through the photosensitive control , it will not turn on the lights in the daytime or light environment, but also can be adjusted in any lighting environment sensing lights . Sensitivity adjustable: turn on lights during day or nights. It can use with lamps, incandescent lamps (bulbs), old-fashioned fluorescent lamps, electronic fluorescent ring lamps, spotlights, transformers, small electrical appliances, and other all other appliance. BlackT Electrotech – Smart Sensors for Safety, Energy Saving & Complete Home Automation. BlackT Automate Lights, Save Energy & Protect Appliances ## Features - 🌟 [Customizable Settings]: Easily adjust the detection distance (0–7 meters), sensing angle (360°), and off-delay time (10 seconds to 7 minutes) for flexible and precise motion detection—ideal for environments below 24°C - 💡 [Versatile Compatibility]: Supports various appliances, LEDs, including incandescent lamps, fluorescent lights, spotlights, and transformers. - 🔋 [Energy-Efficient Design]: Utilizes infrared technology to activate lights only when motion is detected, with photosensitive control to prevent activation in daylight. - 🔧 [Adjustable Ambient Sensitivity]: Customize light sensitivity from 3 to 2000 lux for optimal performance in different lighting environments. - 🛠️ [Easy Installation]: Simple to set up and adjust, ideal for homes, offices, and commercial spaces. - 🛡️ [ Warranty]: Backed by a comprehensive 2-year warranty, ensuring durability and peace of mind. ## Technical Specifications | Specification | Value | |---------------|-------| | Antenna Location | Residential and Commercial Spaces (Homes, Offices, Shops, Hospitals, Corridors, Bathrooms, Parking Areas) | | Asin | B0143JR3MG | | Battery Description | Battery not included | | Best Sellers Rank | #1,558 in Home Improvement (See Top 100 in Home Improvement) #2 in Motion Detectors | | Brand | Blackt Electrotech | | Built In Media | manaul | | Colour | white | | Compatible Devices | Light, Fan | | Country Of Origin | China | | Customer Reviews | 4.0 4.0 out of 5 stars (3,305) 4.0 out of 5 stars | | Frequency | 50 Hz | | 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, Blackt Electrotech | | Manufacturer Contact Information | Blackt Electrotech | | Maximum Range | 7 metres | | Mfr Part Number | BT-31C | | Model Number | BT-31C | | Mounting Type | Ceiling Mount | | Number Of Items | 1 | | Packer Contact Information | Blackt Electrotech | | Power Source | AC | | Unit Count | 1 Count | | Upc | 710918665283 | ## Product Details - **Brand:** Blackt Electrotech - **Colour:** white - **Item Weight:** 160 Grams - **Maximum Range:** 7 metres - **Power Source:** AC ## Images ![Blackt Electrotech BT31C : PIR Motion Sensor Ceiling Mounted White Round Shape (2-Year Warranty) (Regular) - Image 1](https://m.media-amazon.com/images/I/51b279hGtkL.jpg) ## Available Options This product comes in different **Style Name** options. ## Questions & Answers **Q: Is it use for khowing or dectcting paranormal motion sensor ??** A: Are you mad.. who talks about all this in today's world while buying a product .. go see a tantric instead of buying this.. 😂 **Q: Whether installation will be done by the company** A: No, Normal technical or electrical easy do that **Q: Will the luminous intensity of led bulb, connected to this sensor, affects the day/night operation? afraid due to the light, the sensor may not work !** A: Your question is not clear. Once it detect any motion it will power on the load (LED or any lights etc) it has a delay timer. Once there is no motion after set delay time it will power off the load. You can set the light sensetivity and delay as well. **Q: Product Dimensions : 14.8 x 13.4 x 7.8 cm. Is it correct ? How can one install so big a unit ?** A: It is packing size. Unit is circular with Diameter 11.3 CM & Width 2 CM. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth every penny *by on Reviewed in India 18 July 2026* Bought this is June 2017, worked very well for 9 years. just now in July 2026 its started malfunction. Now planning to buy the same product to replace the old one. ### ⭐⭐⭐⭐ Good Product *by on Reviewed in India 15 December 2020* Received it yesterday (14-Dec-2020).. Bought it as a try out to check its quality before buying more. Connected it to the common hand-wash area in the hall as kids mostly forget to switch off the lamp there. Working perfectly as expected. I have not tried it our in the open for day night auto detection yet. That;s why rating it as at 4 as of now. Will update the status of its working quality in the coming months. ### ⭐⭐⭐⭐⭐ Good *by on Reviewed in India 14 May 2026* It does not function as per the requirement. Light comes on auto ON/OFF during day time also. Day/night setting not functioning. Hence request return of the item.I am reviewing again after completing replacement. Tested and found satisfactory. Thank you ## Frequently Bought Together - Blackt Electrotech BT31C : PIR Motion Sensor Ceiling Mounted White Round Shape (2-Year Warranty) (Regular) - Blackt Electrotech : BT31W PIR Sensor Motion Sensor Energy Saving Motion Detector Wall Mounted (1) - Blackt Electrotech: (BT31M1) Microwave/Radar Motion Sensor Occupancy Motion Detector Small Sq Shape 18 Months warrenty (2) --- ## 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.no/products/64722850-blackt-electrotech-bt31c-pir-motion-sensor-ceiling-mounted-white-round](https://www.desertcart.no/products/64722850-blackt-electrotech-bt31c-pir-motion-sensor-ceiling-mounted-white-round) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-09-16*