Feature:1. Boasting strong compatibility and intelligent self-check, this compact unit is easy to install on your 3D printer. 2. Simple installation saves you time and effort. 3. Automatic leveling provides convenience and improves molding power. 4. The BL Touch is an auto-leveling sensor for 3D printers, accurately measuring the tilt of the bed surface. 5. Compatible with various bed materials like glass, wood, and metal. Specification: Item Type: Automatic Leveling Touch Kit Material: Aluminum, plastic Model: 3D Touch upgrade kit Applicable Models: For Ender-3/Ender-3pro/Ender-5/Ender-5pro Touch Color: Transparent. Package List: 1 x 3D Touch Sensor 1 x Memory Card Converter (Adapted for Ender-3 V4.2.7 Version Silent Motherboard) 1 x Connecting Cable 1 x Bracket 2 x Cable Ties 1 x Wrench 4 x Screw Note: Some 3D printer motherboards have insufficient 5V power, which may require an external 5V power supply, showing that the probe is difficult to push out, or the logic circuit protection main control restarts during operation. If this occurs, it is generally recommended to use a DCDC buck module to take power from the main power supply. 1. +5V and GND should not be connected in reverse for a long time, it may burn 2. Try to stay away from strong magnets, motors, fans and other magnetic components 3. Accidentally hitting the plastic rod of the probe may damage or affect the detection accuracy 4. Adjusting or reassembling the set screw on the probe requires thread locking 5. Avoid deformation of the shell when installing the probe 6. Pulling hard on the aluminum rod will damage or affect the detection accuracy