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Mi Light Detection Sensor

Mi Light Detection Sensor

The Xiaomi Mi Light Detection Sensor (model YTC4043GL) brings smart ambient lighting control to your fingertips. This compact Zigbee 3.0 sensor measures light intensity up to 83,000 lux, recording historical data for automation logic—whether to brighten or dim lighting. It integrates seamlessly with the Mi Home app through the Mi Smart Hub, enabling custom scenes triggered by ambient brightness changes. Its minimal design and adhesive-friendly form factor let you position it anywhere—from desk to wall.

Key Features & Highlights

  • Widely responsive: captures ambient light from 0 to ~83,000 lux

  • Zigbee 3.0 wireless: reliable, low-power smart home connectivity

  • Records light history, enabling automated smart scenes based on brightness

  • Compact and unobtrusive: ideal for mounting on shelves, walls, or tables

  • Compatible with Mi Home app via Mi Smart Hub; enables brightness-triggered lighting control

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SpecificationDetails
ModelYTC4043GL (Mi Light Detection Sensor)
Detection Range0 – 83,000 lux
Battery TypeCR2450 coin cell
Wireless ProtocolZigbee 3.0
Operating Temperature–10 °C to 50 °C
Operating Humidity0–95 % RH (non-condensing)
Dimensions40 × 40 × 12 mm
ConnectivityRequires Mi Smart (Zigbee) Hub
ColorWhite
Package ContentsLight Detection Sensor ×1

Product Overview

Dimensions: 40 mm × 40 mm × 12 mm

Weight: Lightweight, battery-operated design (< 50 g)

Setup & Usage Tips

  • Pair only with the **Mi Smart Hub** (Zigbee gateway)—required for sensor connectivity.
  • Automate lighting: define scenes that respond to brightness—e.g., “lights off at dawn,” “dim when dark.”
  • Mount using adhesive or on metal surfaces; place where illumination changes are most relevant.
  • Historical lux data helps refine automation—allowing day/night distinction and dynamic control.
  • Maintain battery: the CR2450 cell offers long life under typical usage scenarios.

Detailed Features