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Filament Hall Effect Sensor Switch Board for Bambu Lab A1 / A1 Mini / P1P P1S, Extruder Feed Detection Replacement Part, Easy Plug & Play InstallationOEM equivalent filament feed hall switch board compatible with Bambu Lab A1, A1 Mini, P1P & P1S 3D printers. Precisely detect filament loading status to eliminate false runout alarms, direct drop-in replacement without firmware modification & extra welding needed.✅ Product IntroductionThis Hall switch filament sensor board is an essential extruder spare part for Bambu Lab A1, A1 Mini and P1 Series(P1P/P1S) 3D printers. Equipped with high-flex FPC flat cable & premium hall sensor chip, it accurately monitors filament presence inside extruder, sends real-time signal to mainboard to avoid unexpected pause, false "filament exhausted" warning & aborted printing caused by defective original sensor.✅ Wide CompatibilityPerfect fit for:▸ Bambu Lab A1 / A1 Mini▸ Bambu Lab P1P / P1SNot applicable for X1/X1C/P2S series✅ Core Advantages - Direct OEM Replacement: 1:1 same size & interface as original part, plug-and-play design, no solder, no printer firmware update required, finish installation within 5-10 mins with common hex screwdriver
- Stable Filament Detection: Reliably trigger green indicator on printer screen once filament inserted, effectively fix issues: frequent printing pause, intermittent missing filament detection, cutter response failure
- Durable Build: Reinforced PCB board + bend-resistant flexible FPC wire, anti-high temperature, anti-fracture under long-term continuous printing environment
- Fix Common Faults: Ideal replacement when your printer keeps popping filament runout error, old sensor cable broken or internal PCB worn out
✅ Installation Tips - Power off your printer and cool down hotend fully before replacement
- Remove extruder side cover, unplug original FPC connector
- Secure new hall board with original mounting screws, plug in cable firmly
- Test: insert filament to check if screen indicator lights up normally
✅ Package Include1 x Filament Hall Switch Sensor Board (as shown in pictures)⚠️ NotePlease double-check your printer model before purchase to avoid incompatible issue.

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