Hygrometers measure the amount of moisture in a specific environment like soil. This soil hygrometer sensor can be used with many microcontrollers including the Arduinos.

Operating voltage: 3.3V~5V
Adjustable sensitivity for Digital Mode
Dual output mode: Digital and Analog

• AO: analog output, real-time output voltage signal on the thermal resistance;

• DO: when the temperature reaches a certain threshold, the output goes high and goes low when signal is lower than threshold, adjustable via potentiometer;

With power indicator LED(Red) and digital switching output indicator LED(Green)

Specifications

Working Voltage: DC 3.3-6V
Working Current: <20mA
PCB Dimension: 15 mm x 30mm
Soil Probe Dimension: 18.3mm x 103mm
Cable Length: 120 cm aprox