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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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- The item is a 5V 1-channel relay interface board and it can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM and so on. - 1-Channel Relay interface board - Equipped with high-current relay : DC 30V, AC 250V, 30A - Standard interface that can be controlled directly by microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM)Dimensions: 1.85 in x 1.46 in x 0.83 in (4.7 cm x 3.7 cm x 2.1 cm) Weight: 1.16 oz (33 g)