Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.
⚡ Elevate your space with motion-activated brilliance — never pay for light you don’t use!
The Blackt Electrotech BT31W is a high-performance PIR motion sensor designed for energy-efficient lighting control. Featuring adjustable sensitivity (1-8m), brightness settings (0-2000 Lux), and wide detection angles (360° ceiling, 180° wall), it supports heavy loads up to 1200W incandescent and 300W LED. Ideal for residential and commercial spaces, it offers easy wall-mount installation, an adjustable timer (10 seconds to 7 minutes), and an 18-month warranty, making it a reliable, smart solution for modern energy management.
| ASIN | B00ZOZI17A |
| Antenna Location | Residential Security, Commercial Security, Automation, Energy Management |
| Battery Description | Battery not included |
| Best Sellers Rank | #3,117 in Home Improvement ( See Top 100 in Home Improvement ) #7 in Motion Detectors |
| Brand | Blackt Electrotech |
| Built-In Media | Nuts |
| Colour | White |
| Compatible Devices | Light, Fan, Bulb, CFL |
| Country of Origin | India |
| Customer Reviews | 4.0 out of 5 stars 1,602 Reviews |
| Frequency | 50 Hz |
| Item Dimensions D x W x H | 9D x 8W x 8H Centimeters |
| Item Type Name | MOTION SENSOR |
| Item Weight | 200 Grams |
| Manufacturer | Blackt Electrotech, Blackt Electrotech |
| Manufacturer Contact Information | Blackt Electrotech |
| Maximum Range | 12 metres |
| Mfr Part Number | BT-31A |
| Model Number | BT-31 |
| Mounting Type | Wall Mount |
| Packer Contact Information | Blackt Electrotech |
| Power Source | Corded Electric |
| Unit Count | 1.00 Count |
B**G
Promptly active
Good device with time and angle adjustments.
R**C
An Impressive PIR Motion Sensor Which Can Detect Motions of Heat Emitting Bodies
An impressive PIR (Passive Infrared) motion sensor. Has a very good response time. Triggers the sensor when a heat emitting body moves in its detection field (works fine for 160+ degree coverage & up to 10-11 meters distance). A problem which I noticed was that minor motions, even human, are ignored and if the device is connected to a light in a room you will have to make serious motions between the set time period or else the sensor won't trigger. So if you are powering a light source with this sensor in a computer room you will have to wave your hand or make some sort of motion within the set time delay or else the sensor will trigger off.
S**E
Automation and energy saving.
Works fine. Initially received a faulty one, so claimed for replacement. Amazon did a hassle free replacement & collected back the faulty one, thanks to Amazon. Wiring and installation was also easy. Avoids human involvement for turning on & off the lights. Works fine so far, have to wait to see it's lifetime.
M**S
Good product but tough to understand
It's a good product, what's missing is it only moves up and down and not sideways, and that's a negative point. So to get the proper effect I had to install it a metre away from the light which means exposed ugly wires. It works now after one day properly, like staying off when there is another light on or it's day time,but the Time is not as described It remains on for at least minimum 3 minutes. I have uploaded a picture for the settings which have worked well. If there was one that could move up down and sideways then this would be the best item
G**H
Bad quality
Don’t ever buy this product try to get different brand with warranty in case any issue so you can return. The company claim sensor range is 12meter but it’s not even working for 3meter. I bought two only used one and got bad result and tried to return second one but company is saying no return. Avoid buying this brand.
A**L
Good motion sensor with 6m range
Good motion sensor, with a range of 5 to 6 m.
A**R
Good value for money
Adjustment knobs are too tiny
T**.
Works perfectly
Good services by Seller.
S**I
Did the job
So far it is working fine as expected
Trustpilot
2 months ago
1 week ago