Moisture Detection Sensor Module for Soil or Water for Arduino Raspberry Pi

  This sensor can be used to detect water or measure moisture levels.  Features:   Sensitivity adjustment (blue potentiometer) used to set the trigger level for moisture detection. It has a green LED that shows when the trigger is on and off. When moisture is detected, the digital pin goes high (1); when no moisture is present, it is low (0).  Alternatively, you can monitor the analog output to measure moisture levels accurately.  Bolt hole on the board for easy installation.   Tech Specs: Comparator LM393 chip, stable PCB size: Approx. 3cm * 1.6cm/ 1.18x 0.63inch Interface Description (4-wire) VCC: 3.3 V-5V GND: GND DO: digital output interface (0 and 1) AO: Analog Output Interface