The general name of the luminaire used for emergency lighting. Fire emergency lighting system mainly includes accident emergency lighting, emergency exit signs and indicators, is in the event of a fire after the normal lighting power cut off, guide the trapped people evacuated or launched fire fighting and rescue operations and set up. However, in the daily inspection found that the unit in the fire emergency lamps selection, installation and use of the process there are many problems. Therefore, the reasonable choice of emergency lighting system power supply control mode, wiring mode, do a good job in daily maintenance work, directly affect the role of fire emergency lighting system. In daily life, to often carry out inspection, preventive!