System for detecting the presence in a rack of a portable unit s

System for determining communication routes in a network

System for determining the position of a transponder

System for enabling handicapped individuals to use gasoline disp

System for equipment control, comprising a common communication

System for establishing a code and controlling operation of equi

System for exchanging information between a portable object such

System for field installation of a remote meter interface

System for identifying, for example, a person for operating an e

System for initiating the operation of an electronically-operate

System for interconnecting parking meters having a memory

System for load output level control

System for locating display devices

System for maintaining receiver/transmitter synchronization with

System for making a thermo-active device temperature dependent

System for measuring domestic consumption of electricity,...

System for monitoring an industrial installation

System for monitoring and controlling electrical consumption, in

System for monitoring status of plurality of repeaters

System for monitoring switch locations