M30 Rotation Monitoring M30 inductive proximity sensors. Adjustment of speed threshold by potentiometer 120 to 3000 impulses/minute (High speed types) 6 to 150 impulses/minute (Low speed types) LED status display Flush mountable brass body Pre-wired with 2m cable Reverse polarity protection Short circuit protection (dc versions only) IP67 environmental rating Sensing Distances (mm) Type Mild Steel (mm) Aluminium (mm) Brass (mm) Stainless Steel (mm) M30 10 7.3 6.3 7.0