The present invention is generally directed to a system for monitoring a variety of environmental and/or other conditions within a defined remotely located region. In accordance with one aspect of the invention, a system is configured to monitor utility meters in a defined area. The system is implemented...http://www.google.fr/patents/US7468661?utm_source=gb-gplus-shareBrevet US7468661 - System and method for monitoring and controlling remote devices
System and method for monitoring and controlling remote devices
