Alarm bells, electric; Alarm central units; Alarm installations and alarms; Dog whistles; Egg-candlers; Electronic collars to train animals; Pedometers; Theft alarms; Walkie-talkies; Acoustic sound alarms; Chronographs for use as specialized time recording apparatuses; Electric door bells; Electric buzzers; Electrified fences; Remote control telemetering machines and apparatus; Riding helmets; Transmitters of electronic signals; Wearable activity trackers