HW-390 Kapazitiver Bodenfeuchte Sensor Modul Breitspannung korrosionsbeständig ~
4,53 €
It avoids the problem that the resistive sensor is easily corroded, and greatly extends its working life. Mini PCs such as Raspberry Pi only need an external ADC (analog signal to digital signal) conversion module to work.
Jetzt bei Ebay:
