🔍 Detect smarter, save bigger — never miss a moment of efficiency!
The Blackt Electrotech BT31M1 Microwave/Radar Motion Sensor offers precise, adjustable motion detection with a wide 360° ceiling and 180° wall coverage. Supporting up to 1200W load, it fits compactly for concealed installation and automatically saves energy by switching off lights or appliances when no motion is detected. With customizable sensitivity and brightness settings, plus an 18-month warranty, it’s the smart choice for modern residential and commercial automation.
| Brand | Blackt Electrotech |
| Colour | white |
| Power Source | Corded Electric |
| Item Weight | 160 Grams |
| Maximum Range | 8 metres |
| Mounting Type | Adhesive Mount |
| Battery Description | battery not included |
| Compatible Devices | Lights, Appliances |
| Product Dimensions | 60D x 40W x 60H Millimeters |
| Recommended Uses For Product | Residential Security, Commercial Security, Automation, Energy Management |
| Manufacturer | Blackt Electrotech, Blackt Electrotech |
| Frequency | 50 Hz |
| Manufacturer | Blackt Electrotech |
| Country of Origin | China |
| Item model number | BT31m1 |
| ASIN | B09W2VZ7HZ |
D**�
Very nice
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.
A**E
Quality product
Product recd today and tested working ok but while ceiling fan is on then unit not switching of the light due to fan blade movement no other issues.
B**S
Works as expected
Nice and small sensor. Can be installed without any tools. I have sticked it to the roof light using hot glue. Keeps sensing activity and light does not turn off untill the room is empty. The sensitivity setting is another convenience feature. You can limit the radius of movement sensing.Very happy with the buy.
S**R
Motion sensor device
This motion sensor doesn't work properly.It is not useful.It does not serve the purpose.Do not buy.
S**E
Good one!
This is a good product.The issue I face with this is there is some flaws in motion detection , Many times even if there is no motion it blows the light. And The point is the issue is in its main functionality , It should be fixed and should be more accurate.
E**.
Best motion sensor
Quality is too goodValue for money. Easy to install. Minimum time delay 10 sec.Use it in your home. Adjustment all control nobes.Day night brightness functionAnd all function working osm
C**N
Excellent Product.
Excellent Product.
G**H
Serve its purpose, but not value for money.
I felt its bit over priced, but purchased due to unavailability in our neighbourhood market.The sensor works as expected, but need to make sure that it’s used with appropriate knowledge.It cannot handle fluctuating voltage, so maybe be suitable with lower voltage or with some adapters.During fluctuating current it produces wrong signal.The distance it covers is good enough.
Trustpilot
4 days ago
2 months ago
