โมดูลเซนเซอร์ตรวจจับความชื้นในดิน

Description 1 .This is a simple moisture sensor can be used to detect soil moisture, when soil water shortage, module output a high level, whereas the output low level. Using the sensor produces an automatically watering device , let you don't manage the plants in the garden. 2 .The sensitivity can be adjust by blue potentiometer 3 .Working voltage : 3.3 V -- 5 V 4 . Double output mode, the digital output is simple and more accurate analog output. 5 .Set the fixed bolt hole, convenient installation 6 .Small board PCB size: 3.2 cm * 1.4 cm 7 .Power indicator light (red) and digital switch output indicator light (green) 8 . comparator adopted LM393 chips, work stability Interface specification (4 wire): VCC —— external 3.3 V to 5 V GND —— external GND DO —— small plate digital output interface (0 and 1) AO —— small plate analog output interface Packing List: 1Pcs Soil Moisture Detector Module with Probe Including Free dupont cables(20cm) #Sensor #Module