Feature: 1. The sensor is the electronic component of the 3D printer, and can accurately measure the inclination of the bed surface. 2. The leveling sensor can be used with any kind of bed material, such as glass, wood, metal, etc. 3. The 3D printer accessories ppossess a simple structure and high accuracy, which can bring convenient printing effect. 4. With automatic leveling function, the sensor is easier to use and can improve efficiency. 5. The color of the kit is transparent, the diameter of brass nozzle include 0.2/0.3/0.4/0.5/0.6mm and the kit is suitable for Ender‑3/CR‑10 3D printer. Specification: Item Type: Automatic Leveling Sensor Kit Material: PTFE+Brass Model: For Ender-3/CR-10 Purpose: For Ender-3/CR-10 3D Printer MK9 Brass Nozzle Diameter: 0.2/0.3/0.4/0.5/0.6mm Applicable Models: For Ender-3/CR-10 3D Printer. Package List: 1 x Blue PTFE Tube1 x Automatic Leveling Sensor1 x Bracket2 x Pneumatic Connector1 x Burner2 x Plug-In4 x Screw1 x Connection Line1 x Adapter Board2 x Tie1 x Wrench5 x Brass Nozzle Note: Some 3D printer motherboards have insufficient 5V power supply and may require an external 5V power supply. This is manifested as the difficulty of pushing out the probe, or the logic circuit protection main control restarts during operation. If encountered, it is generally recommended to use a DC‑DC step‑down module to take power from the main power supply.1. +5V and GND should not be connected reversely for a long time, it may be burnt if reversed2. Please try to keep away from strong magnets, motors, fans, and other magnetic components3. Accidentally hitting the probe plastic rod may damage or affect the detection accuracy4. Adjusting or reassembling the set screw of the probe requires thread glue5. When installing the probe, please avoid deformation6. Pulling the aluminum rod forcefully will damage or affect the detection accuracy7. Not applicable to 4.2.7 motherboard