Insulated through hollow shaft ø0.375…1 inch; Rugged design up to IP 67 protection; Shock resistant up to 200 gs; Insulating insert to prevent high shaft currents from damaging bearings; Wide range voltage supply 4.75…30 VDC; Precision ≤60 arc-seconds for perfect process control; Patented LowHarmonics® technology; Outstanding signal quality for superior speed control