Metronomes; Oscilloscopes; Alarms for the detection of inflammable gases; Audio mixers; Battery chargers; Digital door locks; Effects pedals for guitars; Electric effects units for musical instruments; Electronic padlocks; Gas alarms; Gloves for protection against accidents; Inverters for power supply; Measuring apparatus, namely, laser distance meters; Microphone boom pole; Microphone cables; Motorcycle goggles; Optical sensors; Protective ear covering shields; Voltage stabilizers; Welding g...