Minimum detection object
                                        Φ0.005
                                     
                                        Detection distance ff-403
                                        High speed mode 5
Standard mode 8
Long distance mode 10
                                     
                                        classification
                                        Ffrk / fftk series
                                     
                                        Detection distance ff-301
                                        High speed mode 5
Standard mode 8
Long distance mode 10
                                     
                                        Minimum bending radius (fiber length)
                                        R5(1M)