*This LED emergency drivers allows the same LED luminaire to be used for normal and emergency operation and works in conjunction with an AC LED driver that convert new or existing LED fixtures into emergency lighting. *When AC power fails, this EM-L Series emergency LED driver immediately switches to the emergency mode, operating the LEDs at a reduced lumen output for a minimum of 90 minutes. When AC power is restored, the emergency driver automatically returns to the charging mode.4 codes to suitable rated voltage of luminaire from 15-54vDC. *It adopt a long-life recyclable Lithium battery.Mounts to the junction box and provides flexible conduit for remote mounting of the test accessories.Emergency Operation >90 minutes. *Integration of test switch and charge indicator, Self-test function available. *cUL APPROVED and 5 YEARS WARRANTY - cUL Certified products ensure better quality, safety and reliability