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The Sonoff MS01 is a capacitive soil moisture sensor designed to monitor moisture levels in soil for plants—indoor or outdoor—helping you automate watering and maintain optimal plant health.
🔌 Compatibility
- It works specifically with Sonoff smart switches, such as TH10 / TH16, TH Origin, or TH Elite, which support RJ9 sensor ports.
- Once connected, moisture readings appear in the eWeLink app and can be used to trigger smart actions (like activating a water pump).
Feature Description
Moisture Range: 0–99 % RH (relative humidity) in soil.
Sensor Type: Capacitive, more accurate and durable for wet environments.
Waterproof Rating: IP55 – protects against water jets and dust; suitable for outdoor use
Power: 3.3 V, powered via smart switch interface.
Cable & Extension: Comes with 50 cm cable; supports extensions up to 10 m via RL560 cable.
Build: Dimensions: 130 × 30 × 13 mm; flame-retardant V0 rating.
Voice Assistant Support Compatible with Google Assistant (and Alexa via eWeLink integration).
🛠️ How It Works
- Plug-in Sensor: Insert the MS01 into the soil and connect via RJ9 to a compatible Sonoff switch.
- Monitor Remotely: Moisture levels are accessible through the eWeLink app.
- Automate Watering: Set thresholds in the app—when the soil dries out, the switch can automatically activate a pump or valve.
- Durable Design: IP55 enclosure means it withstands rain and typical garden conditions.
✅ Why Choose MS01?
- Enables smart gardening with automated watering responses.
- Reliable capacitive sensing avoids corrosion and offers stable results.
- Easily expandable with long cable support.
- Waterproof and rugged, suitable for outdoor planting areas.
- Works with voice assistants and common IoT ecosystems.