Suncourt Variable Speed Fan Controller SCP
VS200 Plug-In Variable Speed Fan Controller -  Solid State AC Motor Speed Fan Control. No need to worry about wiring this control.  Just plug into an electrical outlet, then plug your fan into the control. It operates from 115 VAC 50/60 Hz with a maximum rating of 300 Watts (2.5 amps).  The VS200 contains an On/Off line switch with variable speed control from low to high.  UL Listed.