Creality 3D, BL Touch Auto Bed Levelling Sensor V2 32 BitCreality 3D, BL Touch Auto Bed Levelling Sensor V2 32 Bit 4001010009 Applicable Model: Ender 3 V2 Please note that only the bracket for the Ender 3 V2 is included BLTouch is a type of semiconducting hall sensor and is an electronic component for 3D Printers. It precisely measures the tilt of the bed surface. It could work with any kind of bed material, such as glass, wood, metals, and so on. High precision. Intelligence. Stable performance.