A control system selectively controls the operation of at least one lamp and at least one garage door opener. The control system includes a control module. The control module includes connectors adapted to be coupled to at least one lamp through household AC power conductors. The control module also...http://www.google.es/patents/US5903326?utm_source=gb-gplus-sharePatente US5903326 - Trainable RF system for remotely controlling household appliances
Trainable RF system for remotely controlling household appliances
