Genuine Numatic PCB Speed Control Circuit Board - 321990 , 208100 , 208700 & 208800 This is genuine Numatic 230155 , 2 Speed Circuit Board 321990 also previous part numbers 208100 , 280428 , 208700 & 208800 which is compatible with the below motors & machines.This Products Includes a Wiring Diagram.If you're unsure if your machine is compatible please contact us on the bottom right with your Numatic 9 digit serial number & Vacuum Model , we will then advise the right product code. This item includes free delivery when bought on its own or with other free delivery items. For use with: Fits All Machines With High Low Rocker Switch Harry- HVR200A Hetty - HET200A NRV200-22 NRV200-C2 Henry Extra -HVX200A James - JVP180A PSP180A PSP240A PSP370A NSP180A NSP200A NVP180 NVP200 NSR200A PPR200A PPR370A PVT220A PPT220A NST200 NQS250B Please see the related items tab about for links to compatible machines.