Patent ID: 7782804

Claim:
A communications system comprising: an activator device comprising: a first radio device that transmits an activation message; a first microprocessor operatively connected to said first radio device; a first memory component operatively connected to said microprocessor; and a first timer operatively connected to said microprocessor; a remote device comprising: a second radio device that periodically enters into an activation period of operation and a de-activation period of operation in order to conserve power; a second microprocessor operatively connected to said second radio device; a second memory component operatively connected to said microprocessor; and a second timer operatively connected to said microprocessor, wherein said first radio device transmits said activation message repeatedly and continuously for a period at least equal to the sum of said activation period of operation and said de-activation period of operation of said second radio device, wherein at least one complete activation message is transmitted by said activator device during every period of time allotted for activation of said second radio device, and wherein said second radio device increases a frequency of activation of said second radio device upon receipt of a designated activation message from said first radio device.