electronic devices, components and apparatus, namely, electrical channel generators, channel signal generators; LCD displays, digital LCD displays, analog LCD displays, LED displays, digital LED displays, analog LED displays, repeaters for retransmitting or conditioning signals received from another source, often simultaneously; audio receivers for switching output signals or field loads in ballasts, dampers, indicator lamps, pumps, solenoids, starters or valves; digital audio receivers with flip-flop logic, digital receivers with bistable logic, digital and audio receivers with electrical matrix outputs, digital audio receivers with electrical demultiplex output; analog audio receivers with electrical output, analog audio receivers with electrical limit output, analog audio receivers with electrical voltage output; electrical power, current and voltage supplies; digital transceivers with electrical contact input/electrical transistor output, digital audio transceivers with electrical universal input/electrical output; audio transmitters for receiving input signals or field inputs, namely, limit switches, pressure transducers, push buttons, relay contacts, photoelectric sensors, proximity sensors, temperature sensors, voltages; digital audio transmitters with built-in push buttons, digital audio transmitters with electrical matrix inputs, digital audio transmitters with current transformer function, digital audio transmitters with inductive proximity switch function, digital audio transmitters with magnetic proximity switch function; digital audio transmitters with passive infrared detector function; analog audio transmitters with electrical current inputs, analog audio transmitters with electrical frequency inputs, analog audio transmitters with electrical pulse inputs analog audio transmitters with electrical voltage inputs, analog audio transmitters with temperature inputs; wire-born transmitters and receivers for transmitting and receiving wire-born control signals; electrical connectors; electrical contacts; electrical plugs; electrical wires; capacitors; coils; resistors; semi-conductors; Central Processing Units (CPUs); logic circuits; circuit breakers; code blocks for recording or reproducing code signals; decoders for converting digital signals to analog signals, decoders for automatically converting signals into electrical switching actions; decoding circuits; encoders for converting analog signals to digital signals, encoders for converting digital signals to analog signals; encoding circuits; analog/digital (A/D) converters, digital/analog (D/A) converters, analog/frequency (A/F) converters; electrical counters for counting electrical impulses; interfaces for transmitting optical signals, interfaces to PC bus cards, interfaces to modems, interfaces to autodial modems, serial interfaces, parallel interfaces, interfaces for parallel printers, interfaces to fiber optics/current loop converters; modems, private line modems; line-voltage monitors for sampling signals; push buttons, namely, electrical switches; relays; inductive sensors, infrared (IR) sensors, passive infrared (IR) sensors, magnetic sensors, proximity sensors, hall effect proximity sensors, temperature sensors; electrical sockets, electrical outlet covers; electrical switches, inductive proximity switches, magnetic proximity switches; electrical terminals; electrical test equipment, namely, multimeters and panel meters; thermostats; current transformers, adjustable set-point current transformers, power transformers, voltage transformers; power transistors; I/O (input/output) integrated circuit cards; input modules with passive infrared detectors, digital plug-in inputs, analog plug-in inputs, digital inputs for DIN-rail mounting, analog inputs for DIN-rail mounting; digital plug-in outputs, analog plug-in outputs, digital outputs for DIN-rail mounting, analog outputs for DIN-rail mounting; electrical contact inputs, electrical current inputs, electrical frequency inputs, electrical matrix inputs, electrical voltage inputs; electrical current outputs, electrical demultiplex outputs, electrical limit outputs, electrical matrix outputs, electrical relay outputs, electrical transistor outputs, electrical voltage outputs; and parts therefor and for operating the above-specified goods