Patent ID: 8183989

Claim:
An emergency exit indicating system, comprising: a sub-system of power supply, comprising: a first power; a second power; a switch board, electrically connected to the first power; a relay device, electrically connected to the first power, the second power and the switch board; and a control device, comprising: a control unit, electrically connected to the second power; a first power line communication unit, electrically connected between the relay device and the second power line communication unit, and electrically connected to the control unit; and a second power line communication unit, electrically connected to the control unit; a monitoring center, electrically connected to the control unit; and a plurality of emergency exit indicators, electrically connected to the switch board, wherein each of the emergency exit indicators comprises: a light source; a visual indicator, disposed within an illumination scope of the light source; and a third power line communication unit, electrically connected to the light source, the visual indicator and the second power line communication unit.