Milltronics Motion sensing probes: heavy duty, 100 mm measuring range, for use with RMA, MFA 4p, WM300 MFA, or other control. Cable length: Standard length (per notes in model section) Model: MSP-9 with 1.5 m (5 ft) high temperature cable, only with Remote mounted amplifier (RMA) Approval: Ordinary Locations/General Purpose (Non-Ex), CE, UKCA, RCM, KC, CCSAUS, FM