Alarm monitoring systems; Audio-receivers and video-receivers; Batteries; Cabinets for loudspeakers; Communication hubs; Communication modems; Digital photo frames; Earphones; Global positioning system (GPS) apparatus; Headphones; Laptop computers; Monitoring devices for monitoring battery performance characteristics; Network cards; Network routers; Network servers; Portable media players; Power supplies; Radios; Self-timers; Smart watches; Smartphones; Sound transmitting apparatus; Tablet co...