Ebara ET 600W Turbo Molecular Pump Controller 600W ETC04 PWM-20M P/C2 Working!! Turbo Molecular Pump Controller. 600W ETC04 PWM-20M P/C2. Track Page Views With. Auctiva’s FREE Counter. This item is in the category “Business & Industrial\CNC, Metalworking & Manufacturing\Semiconductor & PCB Manufacturing Equipment\Other Semiconductor & PCB Manufacturing”. The seller is “dr.dantom” and is located in this country: IL. This item can be shipped worldwide.