Patent ID: 8468236

Claim:
A system for transmitting and receiving communication messages in a wireless security system, the system comprising: a plurality of security sensor devices, each security sensor device includes a sensor coupled to a multiple frequency transmitter, wherein the sensor is configured to monitor a status change in an area and the multiple frequency transmitter is configured to transmit a communication message at a first frequency and transmit the communication message at a second frequency based on a change in status of the area being monitored; and a receiving device that includes a receiver module coupled to a controller module, wherein the receiver module is configured to receive the communication message at the first frequency and the second frequency from one or more of the plurality of security sensor devices and in response thereto the controller module is configured to generate one or more instruction signals based on the communication message; wherein the multiple frequency transmitter for each of the plurality of security sensor devices is configured to transmit the communication message at least one time at the first frequency and transmit the same communication message at least one time at the second frequency.