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 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.