3D printer -3D printer filament sensor Highlights generic brand 3D printer filament sensor Description: -Optical filament encoder detects the presence of a filament and its movement. -The printer can recognize that the filament is running out, pause the print and ask the user to insert a new spool. -It can also detect stuck filament and offer user an option to clean the nozzle. -Perfectly work with Prusa I3 MK3 3D printer. -Each item has been critically examined before shipment made, please purchase without worries. specification: Size: 33x10mm/1.29x0.39inch Package includes: 1 piece Filament detection sensor Note: Please allow slight difference due to manual measurement. The color may be slightly different since different monitor.