This sensor uses the two probes to pass current through the soil, where it will measure the resistance to calculate the moisture level. More water makes the soil conduct electricity more easily (less resistance), while dry soil conducts electricity poorly (more resistance).
Features:
- Operating Voltage: 3.3 or 5V
- Operatung Current: 35mA
- Output Voltage Signal: 0 to 4.2V
Document:
