Features: Made from high quality PC and Metal , the product is very beautiful with matte texture. Newly designed smart module ,it automatically stops the 3D printer when the filament runs out. Very practical filament detection sensor module, ideal accessories for 3D printer, making your printing work smooth and relieved. The snap design between the base and the outer casing makes assembly easy. The material detection module uses the level jump detection method. When there is material, the level signal of the detection port should be high level. When there is no material, the level signal of the material port goes low. If the high-to-low transition is determined, the material is considered exhausted and a pause command is executed. After the human has replaced the material, the printer continues printing. Package Includes: 1X Filament Break Detection Specifications: Name:Filament Break Detection Module for 3D Printer Parts Color:Black/White Material :Plastic + Metal Filament:1.75MM Weight: 25g note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment.