eep Your P1 Series Printer Running Without False Filament Warnings Is your Bambu Lab P1S or P1P pausing mid-print with a “runout” error even when filament is loaded? Are you seeing “failed to send filament” alerts or cutter lever issues that interrupt your multi-color projects? The culprit is often a faulty hall switch board compatible with Bambu Lab P1S/P1P inside the extruder. Don't let a small part shut down your high-speed printing. What This Extruder Filament Sensor Does This bambu lab P1S hall switch board is the exact replacement for the original filament detection system in the P1 series extruder. It uses Hall-effect technology to precisely monitor two critical functions: Filament presence – detects runout or jams instantly Cutter lever position – ensures clean filament cuts for AMS color swaps When either signal is abnormal, the P1S extruder hall switch board immediately tells the printer to pause, saving your print from failure and preventing material waste. Seamless Multi-Material Printing For users running AMS, AMS 2 Pro, or AMS HT, a reliable extruder filament sensor for Bambu P1P is essential. This P1 extruder filament sensor ensures flawless communication with the multi-material system, recognizing every filament load, unload, and color change. Say goodbye to “failed to send filament” errors that ruin complex prints. Hall Switch Board P1S – Direct DIY Replacement You don't need technical skills or soldering. This hall switch board P1S is a drop-in fit for the extruder assembly. Simply remove the old board and install this bambu-lab P1S/P1P hall switch board using basic tools (H1.5 hex key). Refer to the official Bambu Lab Wiki for step‑by‑step guidance. Power off your printer before starting. Cost‑Effective 2‑Pack for Maximum Uptime Why buy a single replacement when you can have a spare? This 2‑pack extruder hall switch board replacement for BambuLab P1S/P1P gives you one board for immediate repair and a backup for future needs. Print farms, workshops, and frequent users will appreciate the value – half the per‑unit cost compared to single packs. Compatibility Bambu Lab P1S Bambu Lab P1P Not compatible with X1 series, A1 series, or A1 mini. What's Included 2x P1S hotend & extruder hall switch board (with FPC cable attached) 4x mounting screws Restore your P1 printer's filament detection today. Order the 2‑pack and keep printing without interruption.