Product Parameter Working voltage: 3.3~5.5 VDC Output voltage: 0~3.0 VDC When the humidity is high, the voltage is low. When the humidity is low, the voltage is high. Please go back and use a multimeter to measure and confirm. Interface: PH2.54-3P Size: 98 x 23mm (LxW)

Output voltage: 0~3.0 VDC. Working voltage: 3.3~5.5 VDC. Connect an external screen and motherboard, and you can have a conversation with your plants! See if your beloved one is thirsty and if it needs a little more water for nourishment. The sensor is equipped with a built-in voltage regulator chip, which supports a wide voltage working environment of 3.3-5.5V. Even on a 3.3V main control board, it can work normally. Micro PCs like Raspberry Pi only require an external ADC (analog-to-digital signal) conversion module to work. This capacitive soil moisture sensor is different from the majority of resistive sensors on the market, and uses the principle of capacitive induction to detect soil moisture. Avoiding the problem of corrosion in resistive sensors greatly extends their service life.