Onyehn 4pcs Capacitive Soil Moisture Sensor Corrosion Resistant Wide Voltage Operation,for arduino Analog Capacitive Soil Moisture Sensor V1.2 Moisture Detection Garden Watering DIY

These are trash, if the time chip is NE555 there’s an 80% chance they won’t work. If you’re lucky enough to get the boards with TL555 chip then you’ll be ok. I ordered 15, 12 had the NE555 chip did not work at all. I bought TL555 chips and soldered them on to the boards and they worked great. Don’t buy these unless you are going to buy the chips and are comfortable with surface mount soldering

An idenical one i bought on Ali Express did work.

Misrepresented product description. Will not work with 3.3v devices.

The NE555 chip on the board required 4.5 volts minimum. There is a 3.3 volt regulator on the board. Requires the TLC555 chip to work.DO NOT BUY