1、Smart Auto Leveling Sensor: This is a smart auto leveling sensor for 3D printer based on open sources, provides high accuracy leveling through Hall effect control 2、Precise Adjustment: This leveler accurately measures and adjusts the distance between the base plate and the printer nozzle in an easy way 3、Small and Simple Structure: The leveler is small and simple in structure and can be easily applied, bring user with better printing experience 4、Convenient to Use: This 3D touch leveling sensor makes setting up printer dock easier, saving time and increasing working efficiency 5、Applicable for: This bed leveling sensor kit is applicable for Ender 3 3S V2 Ender 5 Pro CR10 etc., can be used with any kind of backing material, such as glass, wood, metal