This moisture sensor can read the amount of moisture present in the soil surrounding it. It's a low tech sensor, but 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.
- Input voltage: 3.3VDC or 5VDC
- Analog output: 0~4.2VDC
- Current: 35mA
- Pin definition: Analog output(Blue wire) GND(Black wire) Power(Red wire)
- Size: 60x20x5mm
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