This capacitive soil moisture sensor is distinguished from most resistive sensors on the market, using capacitive sensing principle to detect soil moisture. Avoid the problem of resistive sensor is easily corroded, greatly extending its working life.
The sensor has a built-in voltage regulator chip that supports a wide operating voltage range of 3.3V to 5.5V, which means it works well even with a 3.3V Arduino main PWB. A raspberry pie mini PC, just an external ADC (analog signal to digital signal) conversion module can work.
Working voltage: ۳٫۳ ~ ۵٫۵ VDC
Output voltage: ۰ ~ ۳٫۰ VDC
Size: ۹۸ x 23mm (LxW)