Banggood

Parecem muito bons na qualidade, não testei ainda, o melhor que recebi em 20 dias em Rondônia, Bangoog é a melhor na qualidade de entrega....

I use these sensors for 1 month to moniture the soil moisture of my chili plants. On my pictures you can see what the sensors look like after a month in wet soil. On one side all the metal plating is gone. Pretty bad quality.

Super Quallität zu einem unschlagbaren Preis! Bin sehr glücklich damit!

Pacco arrivato un mese prima della data prevista. Sembrano di buonissima fattura e l'imballaggio era ben protetto. lo consiglio

nice good quality. high accuracy.

ok

Produit reçu en bonne état et conforme à la description

looking to use them very soon, looking great

Fine stuf.

I use these with ESP8266 NodeMCU directly off A0. When powered from 3.3V pin, needed to add a 10K resistor in addition to the onboard voltage divider to get the output between 0-1 volts. Then it works perfectly. If you drive it via 5v PSU, you will need about 180K resistor to do the same. Another consideration is to use a switching solution like a MOSFET to turn this thing on and off between measurements. Extends lifespan greatly that way.