Features: It can detect the abnormal extrusion of consumables caused by plugging, wrapping and extruder failure. It can replace the common detection of broken materials, such as the breakage of consumables and the exhaustion of consumables. Applicable to Marlin 2.0.x and Klipper. The installation method can be freely selected. Insert consumables from the quick connectors in any direction of the detection module; When printing or discharging normally, the blue light on the module flashes. When the extruder is inactive, the blue light on the module is on or off. Specifications: Component:ABS Voltages: 5V Diameter of testing consumables: 1.75mm Size:Approx.5.5x2.8cm/2.16x1.10inch Package Includes: 1Pc Filament Detection Module Sensors note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.