Apparatus that employs light concentrating optics to concentrate sunlight and to aid in the conversion of sunlight into electric and thermal energy; Circuit boards; Circuit boards provided with integrated circuits; Condensers; Connecting electrical cables; Coolant-temperature sensors; Electric cables, wires, conductors and connection fittings therefor; Electric capacitors; Electric circuit switches; Electric connectors; Electric motor control units for swimming pool, spa, water park and fount...