An elevator system has a data receiving unit that receives service state data transmitted from a control device of an elevator. A pulse modulation unit separates the service state data received by the data receiving unit into first information data and second information data, pulse-modulates the first information data by using the second information data, and creates an LED blinking pattern. An LED drive unit drives a visible light LED placed in a cage of the elevator or on a platform of the elevator in response to the LED blinking pattern created by the pulse modulation unit.