Features simple, smart and precise. It could work with nearly any kind of bed materials, such as glasses, , metals and so on. The position of the point can be obtained by touching the point on the heated bed, and then compensated by adjusting the z-axis height during printing. The 3D-Touch auto leveling sensor is a device that uses the Hall defect to achieve leveling.The position of the point can be obtained by touching the point on the heated bed,and then compensated by adjusting the Z-AXIS height during printing,Printing can also be achieved even though the platform is not flat. The main functions and controls of 3D printer touch are the same as most auto bed leveling sensors, which consists of a RC servo and a -type switch,thus,3D printer touch can be used on 3D printer control board. By using progressively designed solenoid and hall sensor, it can integrate high precision in such a simple structure.To more -friendly and to bring you more enjoyable printing experience. NOTE: Pulling/pushing hardly on the -pin may damage Touch sensor and less accurate. Specifications: Current:15mA Max current (): 300mA Voltage: 5V Cable length: Short: 200mm Long: 1000mm Wire: 3pin: Green:-GND RED:+5V Orange: Signal cable 2pin: Black:-GND White:Z min Instructions 1.After receiving the module, do not install the module to the printer. First connect the signal wires of the module to the motherboard one by one. After power on, there will be a needle suction and needle action, which is normal. 2.When the main board and the module are powered on, do not plug and unplug the cables casually. be to connect when the power is off. 3.After the firmware setting is completed, it is still uncertain whether the setting is . You can manually trigger the module in advance to check whether the is operating normally. If it is abnormal, stop it in time and recheck the firmware . Prevent the probe from hitting the platform, causing damage to the module. size:17.70 x 12.80 x 2.90 cm :Metal + Plastic colour:White Package Contents: 1 * MKS 3D Printer Touch V2.0 Auto Leveling Sensor Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.