Electric and electrical components, namely, wires, transistors, diodes, capacitors, inductors, sensors, resistors and power supplies; sirens; electronic sound alarms; structural parts for electronic robots; electronic burglar alarms; kits for teaching analog, electronic, and digital electronics comprised of resistors, connectors, relays, switches, transformers, semiconductors, rectifiers, capacitors, integrated circuits, transistors, diodes, conductors, inductors, sensors, electronic power su...