Aerials; Antennas; Acoustic alarms; Alarm bells, electric; Burglar alarms; Chronographs for use as specialized time recording apparatuses; Electric batteries; Electric door bells; Electrical and electronic burglar alarms; Electronic key fobs being remote control apparatus; Electronic numeric displays; Electronic personal emergency response system consisting of a device worn on the body with a button that users push to notify others in the event of an emergency, and a remote unit that dials ou...