SITRANS WS300 Speed Sensor A medium- to high-resolution shaft-driven speed sensor used used with Milltronics belt scales. Resolution: 256 PPR Enclosure: 304 (1.4301) stainless steel, NEMA 4X Approvals: CSA/FM Class II, Div. 1, Groups E, F, G and Class III ATEX/IEC Ex II 2D, Ex tD A21 IP65 T70 C, CE, C-TICK Ex tD A21 IP65 T70 C Connections: Standard, up to 2 integrators Switch Isolator: Not required . Manufacturer’s Test Certificate: According to EN 10204-2.2