Cordless telephone apparatuses; Electrical and electronic burglar alarms; Global positioning system (GPS) apparatus; Odometers; Pedometers; pH meters; Smartphones; Smartwatches; Acoustic alarms; Distance measuring apparatus; Electric meters; Electronic door alarms; Electronic exit alarms; Frequency meters; Range finders for cameras; Terminals for radiotelephones; Vibration meters; Wearable activity trackers