3D Printer Filament Runout Sensor Module with RJ11 Cable

Never ruin a long print again. The 3D Printer Filament Runout Sensor Module detects when your filament runs out or breaks mid-print and automatically pauses the job — giving you time to reload and resume without wasting hours of print time or material.

This compact sensor module connects via a standard RJ11/RJ12 connector and cable, making it easy to integrate with most 3D printer control boards that support filament runout detection. The onboard sensor switch provides reliable mechanical detection with a simple plug-and-play setup.

Key Features

• Filament Runout Detection: Automatically pauses print when filament runs out or breaks
• RJ11/RJ12 Connector Interface: Standard connector for easy plug-and-play installation
• Includes RJ11 Cable: Ready to connect straight out of the box
• Onboard Sensor Switch: Reliable mechanical switch for accurate filament presence detection
• Compact PCB Design: Small form factor for easy mounting on printer frame or enclosure
• Compatible with Most FDM Printers: Works with printers that support filament runout sensor input

Package Includes

• 1x Filament Runout Sensor PCB Module
• 1x RJ11 Connection Cable

Applications

• FDM 3D printer filament monitoring
• Automatic print pause on filament runout
• Filament break detection
• Upgrade for printers without built-in runout detection

Compatibility

• Compatible with 1.75mm and 3mm filament
• Works with control boards supporting filament runout sensor (e.g. SKR, MKS, Creality, BTT boards)