The Edwards new SCU-350 control unit is a EU-RoHS compliant controller for small sized turbo pumps. It is fully compatible with the current control unit models, but has an improved vibration property at low frequency range. It also has lower input voltage, which contributes to a reduction in electric capacity and tool power consumption. The SCU-350 has improved noise immunity and is equipped with universal voltage function for operation with supply voltage from 100-240 VAC without switching. Controls the STP-301, STP-451, STPL301, STP-451L Ultra High Vacuum Turbo Pumps Magnetic Bearings.