3.3V-5V Soil Moisture Sensor, Hygrometer Detection Module

A baby description1 This is a simple moisture sensor that can be used to detect soil moisture when the soil is in water, the module outputs a high level, whereas the output is low. Use this sensor to make an automatic watering device, so that your garden plants do not have to manage.2 Sensitivity adjustable (blue digital potentiometer adjustment)4 Working voltage 3.3V-5V5 Module dual output mode, digital output is simple, analog output more accurate.6 With a fixed bolt hole, easy to install7 Small PCB Size: 3cm * 1.6cm8 Power indicator (red) and digital switch output indicator (green)9 Comparator with LM393 chip, stable operationTwo-board interface description (4-wire)1 VCC External 3.3V-5V2 GND External GND3 DO small board digital output interface (0 and 1)4 AO small board analog output interfaceThree instructions1 soil moisture module is most sensitive to environmental humidity, generally used to detect soil moisture.2 module in the soil moisture can not reach the set threshold, DO port output high level, when the soil humidity exceeds the set threshold, the module D0 output low;3 small board digital output D0 can be directly connected with the microcontroller, through the microcontroller to detect high and low levels, which to detect soil moisture;4 small board digital output DO can directly drive our relay module, buzzer module, etc., which can form a soil moisture alarm equipment;5 small board analog output AO can be connected with the AD module, through the AD conversion, you can get more accurate soil moisture values;GeneralModelLM393Quantity1 setForm ColorLight Grey + MulticoloredMaterialPCBSpecificationApplicationGarden, parkWorking Voltage 3.3V-5VVDownload Link ONPacking List1 x Detection board1 x Soil moisture probe1 x DuPont line (20cm / color randomly)Package Weight:0.015kg (0.033lb)Package Size:7cm x 3cm x 1cm (2.76in x 1.18in x 0.39in)