### Core Function This Hall Effect sensor board detects both filament presence and filament cutter lever position inside the extruder. It ensures stable feeding and precise printing workflow. ### Compatibility This product works with Bambu Lab H2S and H2S Laser 3D printers. It is a reliable replacement option that matches the required specifications for seamless integration. ### Quick Response When filament runs out or an abnormality occurs the sensor reacts immediately and automatically pauses printing. This prevents failed prints and saves valuable time and material. ### Easy Installation The complete kit includes Hall Effect Board Assembly ×1 and BT2.6-6 Screws ×2. An installation guide is available online. No professional technician is required.