These Turbo Pump-to-Controller cables connect to the Varian TV81 PCB turbo pump controller. The TV81 PCB controller is ideal for OEM and system integration application. The TV81 PCB operates on 24 VDC and has a very small foot print to be mounted in tight space saving locations. The TV81 PCB controller is sold separately on this website. This price is for the turbo pump cable only.