This soil moisture sensor is used to read the amount of moisture present in the soil surrounding the probe. It is ideal for monitoring the soil moisture in your urban garden and to detect the moisture content of the soil for your indoor flower pots.It uses two probes to easily measure the current flow through soil. The moisture level can be sensed by measuring the resistance of the soil. If the soil has more water in it, it will conduct the electricity more easily (less resistance), while dry soil will hardly conduct the electricity (more resistance).Specifications Operating Voltage: 3.3 V to 5.5 V LM393 Comparator Chip Digital Potentiometer to adjust sensor’s sensitivity Mounting Hole for Easy Installation PCB Size: 3.2 cm x 1.4 cm Package Includes: 2p Dupont line (20cm) Soil Moisture Sensor Probe Soil Moisture Sensor Module
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