Function: Emergency Lights are designed to provide Lights onPower Interruption. These Lights have built in * Battery (SMF Type), * Battery charger * Change over circuitry and* Inverter.Till the mains is ON, the charger stores the energy in the battery. In the event of Power failure, the stored energy is used to light up the tubes. Application:To avoid accident and unwanted situations, these are must for! Industries, ! Hotels, ! Railways Stations, ! Air ports Theaters and! all Public Places.