Ключевые слова: administration, alarm, alert, awake, bell, button, call, check, checkin, client, communication, company, control, corporation, covid, customer, distant, doorbell, firm, gold, golden, guest, help, helpful, hotel, indoor, information, metallic, minute, motel, organization, press, push, reception, rich, service, signal, sound, steel, stop, temperature, thermometer, time, villa, visa, visitor, wait, wave, work, yellow,