9 Apparatus and instruments for conducting, switching, transforming, [ accumulating, ] regulating and controlling electric current for use with household appliances and in commercial kitchens and for professional laundries, namely, [ foil and ] tubular elements, namely, circuits for heat and electricity conduction, voltage regulators, potentiometers, thermal sensors [, electronic components, namely, digital transmitters and optical data links]; electrical, electronic and mechanical switches, electronic controls for motors, water heater controls, [ charging appliances for rechargeable equipment, ] all for controlling, supervising, limiting, and regulating power, time, [ liquid level, sound level ] and temperature for electrical devices and apparatus for warming, cooking, baking, grilling, [ deep frying, infusion of beverages, heating, ironing, ] washing, drying, dishwashing, [ ventilating, air conditioning, cooling, ] water heating, [ temperature adjusters for the motor vehicle industry, namely, automotive measuring instruments in the form of water temperature gauges and exhaust gas temperature gauges, temperature indicators and sensors; climate control systems consisting of digital thermostats, air conditioning, heating, ventilation and drying control devices; ] thermostats; electric control panels for household appliances and household machines, namely, system control panels for ovens, washers and dryers, freezers; markers for the position of control elements, namely, electronic indicator boards; optical and acoustical indicators, namely, electric luminescent display panels and liquid crystal displays for indicating set time and power, indicating working state and function, working conditions, working state and indication of functionability; [ attenuators; ] electric current switches; [ proximity switches, namely, electronic motion sensitive switches and proximity sensors; ] [ opto couplers, namely, charged coupling devices; ] touch sensors [, electronic data relays for sensors, namely, thermo-relays; decision circuits, namely, delay circuits; electric resistors, namely, thick film resistors; ] [ frequency meters and switches, namely, high frequency filters and low frequency filters, and a ] [ programmable logic controller with output features for digital devices, namely, amplifiers; amplifiers]; plug-in attachments, namely, electrical resistance heating wires and electrical controllers therefor [; temperature, ] [ pressure, ] [ and proximity sensors comprised of immersion tubes and protecting tubes for sensors; ] [ replacement materials and ] [ replacement parts for the aforementioned products, namely, plastic conduit for electrical installation, appliance electric plugs and sockets for heaters, binding posts, connecting pieces, insulated electrical wiring, resistors, and optical indicators ]