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🚀 Elevate your space with invisible intelligence — motion sensing that works smarter, not harder!
The Blackt Electrotech BT-31H is a wall-mounted PIR infrared motion sensor switch designed for seamless, energy-efficient home automation. Featuring a wide 160° detection range up to 9 meters, adjustable ambient light sensitivity (3-2000 LUX), and support for loads up to 600W, it offers reliable, safe, and customizable lighting control. Its compact 2-module design ensures easy, hidden installation, making it a top choice for modern smart homes seeking convenience and energy savings.
| ASIN | B07HK8L5XT |
| Antenna Location | Residential Energy Management, Residential Security |
| Best Sellers Rank | #10,719 in Home Improvement ( See Top 100 in Home Improvement ) #2 in Motion-Activated Wall Switches |
| Brand | Blackt Electrotech |
| Built-In Media | false |
| Colour | White |
| Compatible Devices | Light |
| Country of Origin | India |
| Customer Reviews | 3.9 out of 5 stars 177 Reviews |
| Item Dimensions D x W x H | 5D x 7.5W x 7.5H Centimeters |
| Item Weight | 99 Grams |
| Manufacturer | Blackt Electrotech |
| Maximum Range | 9 metres |
| Mfr Part Number | BT-3123 |
| Model Number | BT-3123 |
| Mounting Type | Wall Mount |
| Power Source | 220v,Power |
| UPC | 710918665092 |
| Upper Temperature Rating | 40 Degrees Celsius |
P**R
Best sensor
After 1 yer review best sensor everyone buy this sensor
T**.
Auto on off
Works quite well
V**Y
Good product
Good Product Fist i purchase 1 pic Then purchase 4 pic for my office
D**Y
Useful product
Motion detection is not very good
Y**J
Fits well
This has option of 4 mounting screws and also has removable clamps for mounting in dry walls and false ceiling. It fits well in a 2 port modular box which is easily available in the market. The option of adjusting lux and time is great help. Also there is option to make it work like a manual on off switch if motion sensor is to be stopped for sometime. I hope this lasts for atleast a year. Will update this review as time passes.
A**Y
Works exactly opposite.
Works exactly opposite. When on it turns off, when off it turns on, pir turns the light on when there is no body and on movement it turns off. I replaced the device expecting that it must be a fault but its the second device which is having the same issue. Can somebody help with this?
T**R
Inadequate performance.
Diminished output. It claimed for the 600 W load but the design capacity of connecting terminal is very low.
R**E
A good motion sensor switch
A good quality motion sensor switch. Has facility to select bypass switch to switch on load manually which is good.
Trustpilot
1 week ago
3 days ago