Patent ID: 6546873
Filing Date: 2003-04-15
Classification: F42D

Abstract:
A system for the activation of a remote device, comprising:a plurality of transmitters, each transmitter having a means for generating and transmitting via an antenna a user-set special coded signal, the special coded signal selected from one of a first group of common coded signals for the plurality of transmitters or a second group of unique coded signals for each transmitter, each transmitter having a function selector switch to select modes of operation for the transmitters, wherein a signal representing the selected mode of operation is transmitted in association with the user-set special coded signal; a power source for each of the transmitters; a plurality of receivers, each receiver having a means to receive the user-set special coded signals from the transmitters, wherein each receiver is programmed to receive either one of the common coded signals from the plurality of transmitters or a unique coded signal from one of the transmitters, and each receiver having a function selector switch to select modes of operation for the receiver for producing a receiver output signal to activate a remote device upon receipt of a special coded signal; and a power source for the receiver.