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Soil Moisture Sensor
- The working voltage of 3.3 V to 5 V.
- Simple digital output, g v directly by single chip microcomputer.
- The sensitivity is adjustable using digital potentiometer (blue).
- A fixed bolt hole, convenient installation.
- The power indicator light (red) and digital switch output indicator light (green).
- The comparator uses the LM393 chips, work stabilit