1 This is a simple moisture sensor can be used to test the moisture of soil, when the soil water shortage, module output a high level, and otherwise output a low level. Use this sensor to make one automatic watering device.
2 sensitivity adjustable (shown in blue digital potentiometer control)
4 working voltage of 3.3 V 一 5 V
5 module double output mode, digital output is simple, analog output more accurate.
6 has fixed bolt hole, convenient installation
7 small board PCB size: 3 cm * 1.6 cm
8 power indicator light (red) and digital switch output light (green)
9 use LM393 chip, work stable
Package Weight:0.12kg (0.26lb.)