SITRANS WS300 Speed sensor: shaft mounted, 0.3 … 2 000 rpm, with up to 2 000 pulses per revolution. Resolution: 256 PPR Enclosure: Polyester painted aluminum, NEMA 4X Approvals: Ordinary Locations/General Purpose (Non-Ex), CE, UKCA, RCM, EAC, KC Connections: Standard, up to 2 integrators Switch Isolator: Not required .