Ecowitt WH51 Soil Moisture Sensor Overview
Capacitive soil moisture probe for Ecowitt RF gateways
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The Ecowitt WH51 measures volumetric soil moisture and pairs with GW2000/GW3000 gateways for garden and irrigation automations documented in Ecowitt and Home Assistant integration guides.
Specifications and compatibility notes are based on manufacturer documentation — not independent Atmosiva testing.
Known limitations
- •Amazon listings may bundle multiple probes — verify channel count and gateway compatibility
Pros
- + Documented support on Ecowitt gateways used in Home Assistant guides
- + Multiple WH51 channels supported on GW-series gateways (per Ecowitt docs)
- + No subscription for local readings via gateway API
Cons
- − Requires compatible Ecowitt gateway — not standalone Wi-Fi
- − Probe installation depth and soil type affect readings
- − Not a full weather station by itself
Technical Specifications
915/868 MHz RF to Ecowitt gateway
Home Assistant via Ecowitt gateway integration
Battery powered probe (per Ecowitt documentation)
Compatibility & Integrations
Sensor Capabilities
Volumetric soil moisture probe (requires Ecowitt gateway)
Smart Home
- Home Assistant: Yes
- Weather Underground: No
- Alexa: No
- Rachio: No
- API Support: No
Home Assistant via Ecowitt gateway integration
Connectivity
- Wi-Fi: No
- Ethernet: No
- Bluetooth: No
- Local Data: Yes
- Cloud Required: No
- Subscription Required: No
The Ecowitt WH51 measures volumetric soil moisture and pairs with GW2000/GW3000 gateways for garden and irrigation automations documented in Ecowitt and Home Assistant integration guides.
Garden and irrigation setups already using Ecowitt gateways
- • Capacitive soil moisture measurement
- • 915/868 MHz RF to Ecowitt gateway
- • Used in garden and irrigation editorial cluster
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