Air analysis apparatus; [ Alarm monitoring systems; ] [ Communications servers; ] Computer peripheral devices; [ Data processing equipment, namely, couplers; ] Distance measuring apparatus; Electric navigational instruments; [ Electronic advertisement boards featuring a neon lamp; Electronic memory card readers; ] [ Electronic notice boards; ] Hygrometers; [ Measuring apparatus, namely, clamp meters for measuring electricity; Modems; ] [ Radios; ] [ Smartphones; ] [ Switchboards; ] Temperatur...