Patent ID: 8279060

Claim:
A wireless monitoring system comprising: a master controller having a wireless transmitting unit and a wireless receiving unit; a first module being remote to the master controller and having a first accelerometer, a first wireless transmitting unit and a first wireless receiving unit, the first module being configured with a first alarm bit that is set to indicate an alarm condition when the first accelerometer senses a first acceleration above a first threshold; and a second module being remote to the master controller and having a second accelerometer, a second wireless transmitting unit and a second wireless receiving unit, the second module being configured with a second alarm bit that is set to indicate an alarm condition when the second accelerometer senses a second acceleration above a second threshold, wherein the master controller is programmed to issue a polling signal to the first module and the second module at separate times, and each of the first module and the second module is configured to respond to the polling signal if the respective first alarm bit or the second alarm bit therein is set and ignore the polling signal if the respective first alarm bit or the second alarm bit therein is not set.