Once upon a time, senior living communities paid someone to be at the front desk 24 hours a day. They did this because the emergency call system consisted of a panel of lights and buzzers mounted on the wall. If a resident needed help, a light would turn on and a buzzer would sound. Someone had to be within earshot of this panel at all times, or calls for help would go unanswered. Once they heard it, though, alerting the care givers that someone needed help was another inefficient and labor intensive task.