2 PCS Capacitive Soil Moisture Sensor Module

Description: 
This soil moisture sensor measures soil moisture levels by capacitive sensing rather than resistive sensing like other sensors on the market. It is made of corrosion-resistant material which gives it an excellent service life. To avoid the problem of the resistive sensor is easily corroded, greatly extending its working life.
Insert it into the soil around your plants and get impressed with real-time soil moisture data!
The sensor has a built-in voltage regulator chip that supports a wide voltage working environment of 3.3 ~ 5.5V, which means that it can work normally even on a 3.3V Arduino main control board. This module includes an onboard voltage regulator which gives it an operating voltage range of 3.3 ~ 5.5V. In order to make compatibility with a Raspberry Pi, you will need an ADC converter.
This soil moisture sensor is compatible with our 3-pin "Gravity" interface, which can be directly connected to the Gravity I/O expansion shield.

Note: The components on this board are NOT waterproof, do not expose to moisture further than the red line. (If you want to protect components from the elements, try using a length of wide heat shrink tubing around the upper-section of the board.)

Features:
Input Voltage: 3.3V ~ 5.5V DC
Output Voltage: 0V ~ 3.0V DC
Operating Current: 5mA
Output Type: Analog
Pin Number: 3 Pins
Size: 98mm x 23mm

Applications:
Garden plants
Moisture detection
Intelligent agriculture

Package Include:
2 x Capacitive Soil Moisture Sensor Module
2 x Cable