Motion Failure Alarm MFA 4p: Highly sensitive single set point motion sensor alarm unit used with MSP and XPP probes Enclosure: NEMA 4X, Polycarbonate enclosure Input voltage: 100/115/200/230 VAC, 50/60 Hz, switch selectable. Speed detection version: standard, underspeed (U/S) or overspeed (O/S), switch selectable Approvals: CE,RCM,EAC,KCC CSA US/C, FM