A device for verifying a location of a radio-frequency...
A device that enables the bolt of a lock mechanism to...
A device to monitor the prime of a chemical feed pump
A device with signal generator and signal receiver for...
A durable radio frequency identification label and methods...
A frequency agile antenna system and method
A global data communications service system for remote...
A group interaction system for interaction with other...
A hot water tank alarm
A human movement measurement system
A life safety alarm with a sealed battery power supply
A magnetomechanical electronic article surveillance system...
A message distribution system for distributing a message via...
A metering system
A method and a device for deactivating an alarm element
A method and a device for detecting intrusion into or...
A method and a device for the registration of a vehicle in a...
A method and a device for the registration of the movement...
A method and apparatus for collecting and displaying...
A method and apparatus for detecting items on the bottom...