ITEM NAME:Analog Capacitive Soil Moisture Sensor Corrosion Resistant With Gravity 3Pin JR Features: This analog capacitive soil moisture sensor measures soil moisture levels by capacitive sensing, rather than resistive sensing like other types of moisture sensor. It is made of a corrosion resistant material giving it a long service life. Insert it into soil and impress your friends with the real-time soil moisture data. This module includes an on-board voltage regulator which gives it an operating voltage range of 3.3 ~ 5.5V. This sensor is 3-pin "Gravity" interface, which can be directly connected to the Gravity I/O expansion shield. Applications: Garden plants Moisture detection Intelligent agriculture Specifications: Supports 3-Pin Gravity Sensor interface Operating Voltage: DC 3.3-5.5V Output Voltage: DC 0-3.0V Interface: PH2.0-3P Size: 99x16mm/3.9x0.63" Note: Please allow 1-3mm error due to manual measurement..This sensor is 3-pin "Gravity" interface, which can be directly connected to the Gravity I/O expansion shield. Supports 3-Pin Gravity Sensor interface. 1 x Analog Sensor Cable. It is made of a corrosion resistant material giving it a long service life.