---
product_id: 64722854
title: "BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White)"
brand: "blackt electrotech"
price: "HK$89"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/64722854-bt31fc-fall-recessed-ceiling-mounted-plastic-energy-saving-pir-motion
store_origin: HK
region: Hong Kong
---

# 10s-7min adjustable delay 1200W max load capacity 360° detection coverage BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White)

**Brand:** blackt electrotech
**Price:** HK$89
**Availability:** ✅ In Stock

## Summary

> ⚡ Light up smarter, not harder — never miss a moment!

## Quick Answers

- **What is this?** BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White) by blackt electrotech
- **How much does it cost?** HK$89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/64722854-bt31fc-fall-recessed-ceiling-mounted-plastic-energy-saving-pir-motion)

## 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 & Risk-Free:** Up to 7 meters detection range with a swift 0.6-1 m/s response speed, backed by an 18-month warranty.
- • **Tailored Timing Control:** Customize your lighting with an adjustable delay from 10 seconds up to 7 minutes for ultimate convenience.
- • **Versatile Load Compatibility:** Supports incandescent, LED, CFL, and fans up to 1200W—one sensor to rule them all.
- • **Energy-Smart Light Activation:** Ambient light sensor activates only in darkness, maximizing energy savings without sacrificing comfort.
- • **Full-Spectrum Motion Detection:** 360-degree sensor ensures no movement goes unnoticed, perfect for seamless automation.

## Overview

The BT31FC is a sleek, ceiling-mounted PIR motion sensor switch with a 360° detection range and adjustable time delay (10s-7min). It supports up to 1200W loads including LEDs and fans, features an ambient light sensor for energy-efficient activation, and offers reliable detection up to 7 meters. Designed for residential and commercial automation, it combines high performance with an 18-month warranty for peace of mind.

## Description

BT31FC Fall/Recessed Ceiling Mounted Plastic Energy Saving PIR Motion Sensor Switch with Light Sensor (White)

## 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 |
|---------------|-------|
| Brand | Blackt Electrotech |
| Colour | White |
| Power Source | Corded Electric |
| Item Weight | 120 Grams |
| Maximum Range | 6 metres |
| Mounting Type | Ceiling Mount |
| Battery Description | Battery not included |
| Compatible Devices | other |
| Recommended Uses For Product | Residential Security, Commercial Security, Automation, Energy Management |
| Manufacturer | Blackt Electrotech |
| Country of Origin | India |
| Item model number | BT-61C1 |
| Package Dimensions | 11.2 x 10 x 8.2 cm; 120 g |
| ASIN | B01MTD4K9A |

## Product Details

- **Brand:** Blackt Electrotech
- **Colour:** White
- **Power Source:** Corded Electric
- **Item Weight:** 120 Grams
- **Maximum Range:** 6 metres

## Images

![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)

## 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

## 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)

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**Shop now:** [https://www.desertcart.hk/products/64722854-bt31fc-fall-recessed-ceiling-mounted-plastic-energy-saving-pir-motion](https://www.desertcart.hk/products/64722854-bt31fc-fall-recessed-ceiling-mounted-plastic-energy-saving-pir-motion)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-23*