Moisture sensor can be used to detect soil moisture when the soil moisture deficit module outputs a high level, and vice versa output low. Use this sensor produced an automatic plant waterer device, so that the plants in your garden without people to manage. adjustable sensitivity blue digital potentiometer adjustment Operating voltage 3.3V-5V- module dual output mode, the digital output is simple, more accurate analog output. small footprint: PCB size 3cm * 1.6cm power indicator (red) and digital switching output indicator (green) A fixed bolt hole for easy installation stable LM393 comparator chip https://elecena.pl/product/17485421/soil-moisture-sensor-module 2021-03-29 https://elecena.pl/product/17485421/soil-moisture-sensor-module 2024-04-29