I have three remote controlled ceiling fans with lights in three different rooms. All of them stopped working at the same time. No problem with circuit breakers. I have wireless internet, cordless phones, garage door openers etc. in the house. All these equipment including fans were operating without any problem until yesterday. What could be the problem? Thinking of resetting the dip switches, but why all three at the same time? I really appreciate if some one can help me with this problem.

Dryers - Oasis - Hunter 54' Ceiling Fan