Electronic surveillance apparatus; portable media players; home theater; sound recording apparatus; encoded identification bracelets, magnetic; electronic publications [downloadable]; microphone; headphones; plugs, sockets and other contactors (electrical connections); set top box; wearable smart bracelet (a wearable electronic device that records and processes daily life data); network routers; projector (projector lamp); usb flash drives; switchboards; global positioning system [gps] apparatus; electromagnetic coils; inverters [electricity]; low voltage power supply; network communication equipment.