Universal encrypted radio transmitter for multiple functions

A system for controlling security systems at a home comprising:

• a transmitter, provided with a plurality of buttons, separate channels associated with each of said buttons such that when one of said buttons is actuated, a signal is transmitted by said transmitter, and at least one of said channels being provided with encryption logic such that an encrypted signal is transmitted by said at least one channel said encryption logic in said transmitter causing signal to be sequentially different upon each actuation of said transmitter;
• a receiver for receiving said transmitted signals, said receiver being provided with encryption logic such that it can recognize said changing different encrypted transmitted signals;
• and
• said receiver adapted to be connected into a home security system, such that said receiver is operable to actuate said home security system.

A method of controlling home security systems comprising the steps of:

• (1) providing a transmitter with at least one button, said button being operable to actuate at least one of a garage door opener and a home alarm system, and said transmitter also being operable to encrypt a signal for said at least one of a garage door opener and a home alarm system, providing a receiver for at least said one of a garage door opener and a home alarm system, said receiver being operable to receive and recognize an encrypted signal and compare the signal to an expected signal, said receiver being operable to actuate its system if said received signal corresponds to an expected signal said encryption logic for said transmitter and said receiver sequentially encrypting and changing the signal, said receiver having a counter storing a last received acceptable signal, said receiver beginning its comparison of expected signals with the next expected signal after said last received signal;
• (2) actuating said button and transmitting an encrypted signal;
• (3) receiving said signal, comparing said received signal to an expected signal;
• and
• (4) actuating said system if said received signal corresponds to said expected signal.