Patent ID: 7439867

Claim:
An environmental sensor network comprising: a first environmental sensor unit including a sensor adapted to measure a condition and a transmitter adapted to operate in an “activation” mode in which the transmitter transmits a predefined sequence and a first sensor ID and a “data” mode in which the transmitter transmits data based on the measurement; a second environmental sensor unit including a sensor adapted to measure a condition and a transmitter adapted to operate in an “activation” mode in which the transmitter transmits a predefined sequence and a second sensor ID and a “data” mode in which the transmitter transmits data based on the measurement; and a central display unit including a receiver adapted to receive a transmission from the first environmental sensor and to receive a transmission from the second environmental sensor, a memory device, and a processor adapted to selectively operate in an “add” mode in which the processor records the presence of the first environment sensor unit in the memory device upon the receipt of the predefined sequence and the first sensor ID and records the presence of the second environment sensor unit in the memory device upon the receipt of the predefined sequence and the second sensor ID, and a “display” mode in which the processor outputs information based on the measurement.