Ceiling fans cannot be controlled with a standard lamp module due to the risk of fire or equipment damage. There are some X-10 modules that can control ceiling fans. One of these is made by Leviton.

Leviton makes non-dimmable wall switches, models 6291 and 6293.

Models 6381 and 6383 are two-way, dimmable wall switch modules.

For ceiling fans and other low voltage applications, there are the 6381-U, 6383-U.

All of these Leviton DHC devices use higher quality signal circuitry for better reliability in communicating with the device.

http://www.leviton.com/pdfs/g-5024%20dhc%20brochure.pdf.pdf