sensor

ThirdReality Smart Soil Moisture Sensor

ThirdReality

budget local: excellentFully controllable on your LAN with no internet dependency. Zigbee
Price
budget band last checked Mar 22, 2026
HA fit
good
Works offline
yes
Setup
easy
Hub needed
yes

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ThirdReality Smart Soil Moisture Sensor - Zigbee soil moisture and temperature sensing for smart garden automations

Quick verdict

Finally, a Zigbee soil moisture sensor that feeds real data into Home Assistant. Stick it in your garden bed or a potted plant and automate your watering based on actual moisture levels instead of guessing. Cheap enough to deploy several across different zones.

Standout: Zigbee soil moisture and temperature sensing for smart garden automations.

Notes last checked Mar 22, 2026.

Compatibility snapshot

Home Assistant goodReliable local integration with minor caveats (a hub, manual config, or polling). Core function works locally.
Apple Home noneNo official support on this platform.
Google Home noneNo official support on this platform.
Alexa noneNo official support on this platform.
Works offline yes
Setup easy
Extra hub needed yes
Power battery

Local control facts

  • Home Assistant: zha integration, Local Polling (home-assistant.io, checked Sep 10, 2026)

Why it stands out

  • measures both soil moisture and soil temperature
  • affordable for monitoring multiple garden beds or pots
  • Zigbee connectivity for fully local automations
  • pairs well with the ThirdReality watering kit for automated irrigation

Reasons to hesitate

  • Zigbee range may be limited outdoors, so plan your mesh accordingly
  • requires a Zigbee coordinator
  • probe durability in harsh weather is unproven long-term

Best for

  • automating garden watering based on actual soil conditions
  • monitoring houseplant moisture levels through Home Assistant

Avoid if

  • your garden is far from your Zigbee mesh range
  • you need professional-grade soil analytics

Privacy and local-control notes

Pure Zigbee sensor with no cloud dependency. Fully local operation through ZHA or Zigbee2MQTT.

Home Assistant support: supported · integration path: ZHA / Zigbee2MQTT.

Buying reality check

Price notes: Budget-friendly for a smart soil sensor. Pair with the watering kit for a complete automated irrigation setup.

Compare side by side: see sensor comparisons →

Verified against

The compatibility notes above have not been through the source audit yet. The notes were last checked Mar 22, 2026.

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