VCC ➠ 3.3V-5V
GND ➠ GND
DO ➠ Digital output interface(0 and 1)
AO ➠ Analog output interface
Having LM393 comparator chip, stable
Module Output is a high level when the soil moisture deficit or output is low. Can be used in module plant waterer device, and the plants in your garden no need people to manage.
Adjustable sensitivity by adjusting the digital potentiometer.
A fixed bolt hole for easy installation
With power indicator (red) and digital switching output indicator (green)
Dual output mode, analog output more accurate.