Xiaomi LYWSD03MMC pvvx

unverified library/ble/xiaomi-lywsd03mmc-pvvx.hal.yaml

Id	xiaomi-lywsd03mmc-pvvx
Manufacturer	Xiaomi
Model	LYWSD03MMC pvvx
Driver	ble
Hazard	low
Limits	unconfirmed This file has read channels only, so nothing in the file changes the device.

Read channels

Channel	Type	Unit	Every
temperature	number	degC	stream
humidity	number	%	stream
battery	number	%	600 s

openhal: "0.1"
device: { name: Xiaomi LYWSD03MMC with pvvx firmware, model: LYWSD03MMC pvvx, manufacturer: Xiaomi }
id: xiaomi-lywsd03mmc-pvvx
match:
  ble_name: "^ATC_[0-9A-F]{6}$"
connect: { ble: auto, scan_timeout: 10 s, timeout: 15 s }
read:
  temperature: { unit: degC, stream: true, range: [0, 60], map: { characteristic: 2a6e, format: sint16, scale: 0.01 } }
  humidity: { unit: percent, stream: true, range: [0, 100], map: { characteristic: 2a6f, format: uint16, scale: 0.01 } }
  battery: { unit: percent, every: 10 min, range: [0, 100], map: { characteristic: 2a19, format: uint8 } }
hazard: low
notes: >-
  Suggested limits. A person must confirm every limit before this device can be written.
  This is the same sensor flashed with the pvvx ATC_MiThermometer firmware, which names it ATC_ followed by
  the end of its MAC address and serves the standard Environmental Sensing characteristics. This file only
  reads.
provenance: { source: library, by: OpenHAL starter library, at: 2026-10-25, verification: { status: unverified } }