### Zero Delay Filament Runout Detection This photoelectric switch board detects filament presence instantly and triggers smart pause the moment material runs out or breaks. Prevents wasted time and material by automatically pausing the print and saving your progress. ### Compatible with Kobra 3 and Kobra 3 Combo Designed as a direct replacement for the original Anycubic material break detection module.Fits Kobra 3 and Kobra 3 Combo printers. ### Works with All 1.75mm Filaments Highly sensitive sensor responds accurately to PLA,PETG, ABS,TPU,wood-filled, and carbon fiber reinforced filaments.No calibration or adjustment needed after installation. ### Wear Resistant Feeding Path The robust feeding path withstands continuous friction during high speed printing.For smoothest feeding,cut the filament tip straight before inserting. ### Easy DIY Installation： Replacement requires only standard hex keys (S1.5, S2.0, S2.5) and tweezers. Follow the step-by-step guide on Anycubic Wiki. Always power off the printer before replacing