Sprinklers and Sprinkler Heads This analog capacitive soil moisture sensor measures soil moisture levels with a capacitive sensor,not resistive sensor like other types of moisture sensors It is made of corrosion resistant material,What gives it a long service life Put it in the soil and impress your friends with real-time soil moisture data This sensor is compatible with DFRobot 3-pin gravity interface,which can be directly connected to the Gravity I/O expansion shieldSupports 3-pin gravity sensor interface Analog output Applications: Garden Plants Moisture Detection Intelligent Agriculture Specifications:Operating voltage: DC 3,3-5,5 V Output voltage: 0-3,0 V DC Interface: PH2.0-3P Size: 99x16mm/3,9x0,63 Quantity:1 set Note: Please allow 1-3mm error resulting from manual measurement. pls make sure you don't mind making an offer due to the difference between different monitors the picture may not reflect the actual color of the item. No retail packaging Package includes: 4 x capacitive soil moisture sensor 4 x analog sensor cable