Installed on the upper part of the extruder, it functions as a sensor for detecting filaments. Precision Extruder Filament Sensor for Bambu P2S: This extruder filament sensor kit is specially designed for Bambu Lab P2S 3D printers, providing accurate filament detection and stable feeding performance. It is an ideal replacement and upgrade part for keeping your printer running smoothly and reliably. 3D Printer Replacement Parts: Manufactured from durable, wear‑resistant materials, this kit offers excellent stability and long service life. The precise structure helps reduce feeding errors, improve printing consistency, and minimize print failures caused by filament run‑out or mis‑feeding. Color: Black Material: PCB Package Contents: 1 * Extruder Filament Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.