This is a summary of the moisture sensor can be used to detect soil moisture, when soil water deficiency, the module outputs a high level, whereas output low level.
Using this sensor to water the flowers make an automatic device, without people to manage your garden plants.
Sensitivity can be adjusted (figure blue digital potentiometer adjust). Soil humidity module on the environment humidity the most sensitive, generally used to detect soil humidity.
Module in soil moisture can not reach the setting threshold, DO mouth output high level, when soil moisture more than setting threshold value, module D0 output low level.
Product Name : Soil Humidity Detection Sensor Module
Model : FC-28-B
Working Voltage : DC 3.3-5V
Pin Quantity : 4
Output : Digital Switching Output (0 and 1)
Body Size : 33 x 15 x 6mm/1.3" x 0.6" x 0.2"(L*W*T)
Cable Length : 20cm/7.8"
Material : Plastic, Electronic Part
Main Color : As Picture Show
Package Content :
1 x Soil Humidity Detection Sensor Module w 5 Cable
1 x Soil Sensor
Note: Random color, don't accept the specified color.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.