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Modul cảm biến đo độ ẩm đất
1 This is a summary of the moisture sensor can be used to detect soil moisture, when the soil water, the module outputs a high level, whereas the output low. Using this sensor make an automatic watering system, so that your garden plants need people to manage.
2 adjustable sensitivity (blue digital potentiometer adjustment)
4 Operating Voltage 3.3V-5V
5 module dual output mode, the digital output is simple, the analog output is more accurate.
6 has a fixed bolt hole for easy installation
7 small board PCB size: 3cm * 1.6cm
8 Power indicator (red) and digital switching output indicator (green)
9 comparators LM393 chip, stable
Two small plate interface specification (4-wire)
1 VCC 3.3V-5V external
2 GND External GND
3 DO small board digital output interface (0 and 1)
4 AO small plates analog output interface