Skip to content
Home Assistant TestFlight
Ecowitt

Ecowitt WN31 temperature/humidity sensor

Sensors · Security

WorksLocal

2 reports: 2 say it works.

Reported with 2 integrations: MQTT, Ecowitt.

What people report

IntegrationIn Home AssistantIn Apple HomeWhat they saidSource
MQTT
Ecowitt
Works LocalCheap, display, accurate, long battery life; 3 users recommend
Saved copy
I use ECOWITT WN31 because I already have rtl433 feeding mqtt for door sensors and water meter. These use normal batteries that last a long time, support multiple channels, and are inexpensive.

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

Reddit comment · 2024-06
EcowittWorks LocalUpdate every minute or two; local network push to HA
Saved copy
Ecowitt WN31 sensors and GW1100 base station that collects data from the sensors and publishes it over local network to home assistant's ecowitt integration endpoint

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

Reddit comment · 2025-05

Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.

In ReReHome

Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.

Identifiers

BrandEcowitt
ModelWN31
CategorySensors

Also reported as

  • Ecowitt WN31 sensors with GW1100