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Homebridge TestFlight
Xiaomi

Xiaomi Mijia LYWSD03MMC Thermometer

Sensors · Security

Mixed reports

2 reports: 1 says it works, 1 says it partly works.

Reported on r/homebridge without a plugin from our list.

What people report

PluginStatusWhat they saidConnectsSource
Not namedWorksCheap Bluetooth sensor works with alternate firmware and a Bluetooth-capable Pi
Saved copy
I bought a bunch of Xaomi sensors (LYWSD03MMC) for 8 dollars each. With alternate firmware and a bluetooth capable Pi you have a very, very cheap sensor..

Excerpt saved from Arctic Shift Reddit archive on 2026-10-22.

Connection not statedReddit comment · 2022-12
homebridge-mi-hygrothermographPartly worksNo data on macOS until node granted Bluetooth permission; then worked
Saved copy
… permission to access Bluetooth in macOS Preferences -> Security & Privacy -> Bluetooth Here's a small guide: https://github.com/hannseman/homebridge-mi-hygrothermograph/issues/127

Excerpt saved from Arctic Shift Reddit archive on 2026-10-22.

Connection not statedReddit comment · 2020-12

Each row is one report from a plugin’s GitHub issues, pull requests, discussions, wiki or docs, or from r/homebridge. Check the date and the linked thread before you buy.

In ReReHome

Once a Homebridge plugin publishes it, this device reaches Apple Home as a HomeKit accessory behind your Homebridge bridge, so ReReHome shows and controls it like any other.

Identifiers

BrandXiaomi
ModelLYWSD03MMC
CategorySensors

Also reported as

  • Xiaomi Mijia Hygrothermograph LYWSD03MMC
  • Xiaomi LYWSD03MMC thermometer