Soil moisture sensor

Precision Soil Moisture Sensor – Capacitance‑Based Smart Sensing

The Soil Moisture Sensor employs a capacitive sensing probe to detect volumetric water content in the root zone with minimal self‑consumption and negligible soil disturbance. Its analog voltage output from 0 V (dry) to 5 V (saturated) provides a linear scale that is compatible with most microcontrollers and data loggers. Designed for long‑term deployment, the sapphire‑edge electrodes offer corrosion resistance and low power drift, enabling accurate readings in both acidic and alkaline soils.

• Key Spec 1: Operating Voltage: 3.3‑5 V DC
• Key Spec 2: Output Interface: 0‑5 V Analog (linear to moisture %), optional I²C 4‑wire (0‑5 V)
• Key Spec 3: Operating Temperature: –10 °C → 70 °C, with 30 % humidity tolerance
• Common Use Case: Automated irrigation control, greenhouse climate monitoring, precision agriculture data streams