0-10V Electronic Fan Speed Controllers: EFSC-010 Range
The EFSC-010 range provides a solution for speed controlling voltage controllable single phase AC motors using an 0-10vdc signal. As the 0-10v signal increases from 0-10v the AC output to the fan increases from the pre-set minimum to the pre-set maximum.

Alternatively the EFSC-010 range can be used in conjunction with a remote potentiometer to manually adjust the speed from the pre-set minimum to the pre-set maximum.