Amplifiers for bass guitars; Amplifiers for musical instruments; Aquarium thermostats; Audio amplifiers; Audio circuit boards; Audio equipment for vehicles, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; Consumer electronic products, namely, audio amplifiers, audio speakers, audio receivers, electrical audio and speaker cables and connectors, audio decoders, video decoders, speakers, power conversion devices, power converters, and power inverters; Home theater systems comprising DVD players, audio amplifiers and audio speakers; Humidity sensor with integrated digital and analog output circuitry used in automotive, appliance and light industrial applications to sense both relative humidity and temperature environmental conditions; Multi-function electronic device for use in children's rooms comprising a sound producing function, temperature gauge and also including a clock and nightlight; Temperature controller for controlling temperature of medical instruments and containers for medical fluids; Temperature indicators