ThirdReality Smart Soil Moisture Sensor Gen2
Zigbee 3.0 soil moisture and temperature sensor. Capacitive probe, 2-year AA battery, works with Home Assistant, Hubitat, SmartThings, and Matter bridges.
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How It Works
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Plants are honest about what they need, but only if you are paying attention. The Smart Soil Moisture Sensor Gen2 reads moisture and temperature continuously and pushes the readings to your Zigbee hub, so you stop guessing and start automating.
The capacitive probe is the upgrade you actually feel. It does not corrode like the old conductive type, the readings stay accurate as soil composition changes (salinity, fertilizer, pH), and the new antenna design pushes Zigbee range to about 50 metres in open conditions. One AA battery runs for around two years.
Set thresholds in Home Assistant or Hubitat and trigger anything Zigbee can talk to: a smart plug for the irrigation pump, a push notification when the basil dries out, season-long moisture trend logs. Matter compatibility comes through the Third Reality MZ1 bridge, so the sensor can also surface in Apple Home and Google Home.
A battery sensor over Zigbee sleeps most of the time and reports on a schedule rather than instantly. If the sensor sits beyond the typical mesh range, drop a Zigbee smart plug or bulb in between, they double as repeaters and stretch coverage.
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