THIRDREALITY Soil Moisture Sensor Gen2 - Zigbee Soil Moisture Sensor

The THIRDREALITY Soil Moisture Sensor Gen2 (model 3RSM0347Z) is a smart Zigbee 3.0 soil moisture sensor specifically designed for plant enthusiasts who want to optimally care for their green friends. This sensor accurately measures soil moisture and temperature , giving you real-time insight into the condition of your plants via your smartphone.

Why this sensor?

The unique feature of this Gen2 sensor is its capacitive measurement technology , which is superior to traditional resistive probes. Capacitive sensors are less affected by soil salinity and pH, ensuring a longer lifespan and more reliable measurements in various soil types. The sensor reports real-time data every 5 minutes, so you know exactly when your plants need water.

Compatibility & Automation

The sensor is fully compatible with Home Assistant (both ZHA and Zigbee2MQTT) and works perfectly with SmartThings Aeotec . Support is also available for users with a Homey Pro . Note: the sensor does not work directly with Alexa Echo devices without a separate Zigbee hub.

Home Assistant users gain access to entities for soil moisture, temperature, battery level, and signal strength via Zigbee2MQTT. With the optional Smart Bridge MZ1, you can also integrate the sensor with Apple Home and Google Home.

Practical Automation Example

Imagine creating an automation where the sensor monitors the soil moisture of your monstera plant in the living room. Whenever the moisture level drops below 30%, you'll automatically receive a push notification on your smartphone. Even smarter: combine the sensor with an automatic watering system (like the ThirdReality Smart Watering Kit), and your plants will automatically be watered when the soil gets too dry. This way, you'll never have to ask your neighbors to tend your plants while you're away!

Technical Specifications

• Protocol: Zigbee 3.0 (Zigbee hub required)
• Measurements: Soil moisture (0-100%), temperature, battery level
• Power: 1x AA battery (included)
• Battery life: Up to 3 years with normal use
• Reporting interval: Every 5 minutes
• Sensor type: Capacitive (durable and accurate)
• OTA updates: Supports firmware updates
• Suitable for: Indoor and outdoor use (outdoor range may be limited)

Installation & Use

Installation is simple: insert the probe into the soil of your plant, connect the sensor to your Zigbee hub, and you'll receive your first measurements within minutes. The sensor is suitable for use in various environments, such as greenhouses, gardens, nurseries, and houseplants.

NB

Users report that Zigbee range can be limited when used outdoors, so keep this in mind when placing your Zigbee network. It's also important to note that the sensor tracks trends rather than absolute values—placement in the pot and calibration are essential for reliable data.

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