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The Soil Moisture Sensor is a simple breakout for measuring the moisture in soil and similar materials. The soil moisture sensor is pretty straight forward to use. The two large exposed pads function as probes for the sensor, together acting as a variable resistor. The more water that is in the soil means the better the conductivity between the pads will be and will result in a lower resistance, and a higher SIG out.
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Rated Voltage DC 6.0V DC 9.0V DC 12.0V Max Current <350MA <250mA <180mA Rated Power 2~3.5W Water Pressure 0~70KPA Water Flow 0.5~0.8LPM Leakage <9mmHg/min(inflating from 0 to 300 -10mmHg in a 100cc tank and then stoping for 30sec.) Apply Air,Water Life Test Power on 30sec.and then Power off 20sec. About 30,000 times. Temperature 0~55℃