Moisture Sensor Soil Moisture Sensor Automatic Plant Waterer Dedicated Supply voltage: 3.3V-5V Operating Current: 15mA Output Voltage:0-2.3V [2.3V is completely immersed in water, the voltage values] 3.3V power supply, the greater the humidity, the greater the output voltage. 0-4.2V [4.2V is completely immersed in water, the voltage values] 5V power supply, the greater the humidity, the greater the output voltage Interface definition: 1 foot signal, 2 feet to 3 feet power is