Moisture sensor can measure the amount of moisture present in the soil surrounding it. It is ideal for monitoring an urban garden, or your plant's water level. This sensor uses the two probes to pass current through the soil, and then it reads that resistance to get the moisture level. More water makes the soil conduct electricity more easily (less resistance), while dry soil conducts electricity poorly (more resistance). It will be helpful to remind you to water your indoor plants or to monitor the soil moisture in your garden.
- Soil moisture sensor based on soil resistivity measurement
- Voltage: 3.3VDC or 5VDC
- Analog output: 0~4.2VDC
- Current: 35mA