ebm-papst Fan Speed Controller for Use with ebm-papst EC Fans, 10 V dc, Infinitely Variable

See RS 743-4817 for the "unboxed" equivalent controller (PCB and control knob only) which is not mounted in an enclosure. RM-ECv Fan Speed Controller Variable + Adjustable Max and Min. The RM-ECv controller is for use with the full range of ebm-papst EC (electronically commutated) fans. Powered by the 10VDC output from the fan motor, it provides infinitely variable manual speed controlbetween 0% and 100%. The maximum and minimum speeds can be varied during commissioning to limit the maximum soeed and / or restrict the lower speed.