Features: The TD1 sensoring board enable precise measurement of filament transmission distance values and color codes, ensuring accurate multi color printing compatibility with for Lab and most printers. Featuring two PCBs and USB C power, this printer filament sensoring offering real time monitoring and continuous color code capturing during printing or spooling operations. Designed for printing enthusiasts and professional creators seeking scientific color accuracy, it's ideal for users of HueForge software and for Lab systems requiring performances optimization. Perfect for monitoring filament properties during multi color printing projects or when developing profile in workshops, maker spaces, and professional printing environments. This essential printing accessory streamlines workflow integration by delivering laboratory grade measurement capabilities directly to your printer setup, eliminating manual calculations for consistent print quality. Specifications: For TD1 Filament Color sensoring Board Size：about 65x31mm/2.56x1.22in 65x27mm/2.56x1.06in For Lab and Most Printers Package Includes: 1setxTD1 PCB board note: This list applies required to build TD1. You still need to get the remaining hardware according to the build guide. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.