20Pcs Soil Hygrometer Humidity Detection Module Moisture Sensor

20Pcs Soil Hygrometer Humidity Detection Moisture Sensor ForDescription This is a summary of the soil moisture sensor can be used to detect moisture when the soil is dry the module outputs a high level whereas output low Using this sensor make an automatic watering system so that your garden plants without people to manage Operating voltage 3 3V 5V Adjustable sensitivity shown in blue digital potentiometer adjustment Dual output mode analog output more accurate A fixed bolt hole for easy installation With power indicator red and digital switching output indicator green Having LM393 comparator chip stable Panel PCB Dimension 3cm x 1 5cm Soil Probe Dimension 6cm x 2cm Cable Length 21cm VCC 3 3V 5V GND GND DO digital output interface 0 and 1 AO analog output interface Instructions for Use 1 Soil moisture module is most sensitive to the ambient humidity is generally used to detect the moisture content of the soil 2 Module to reach the threshold value is set in the soil moisture DO port output high when the the soil humidity exceeds a set threshold value the module D0 output low 3 The digital output D0 can be connected directly with the microcontroller to detect high and low by the microcontroller to detect soil moisture 4 The digital outputs DO shop relay module can directly drive the buzzer module which can form a soil moisture alarm equipment 5 Analog output AO and AD module connected through the AD converter you can get more precise values of so