supply of supply, installation & testing of driversupply, installation & testing of driver,supply, installation & testing of driver for suitable use in various make/brand of led batt en fitting 18 watts to 28 watts, surge voltage withstand : 2.5 kv, operating voltage range in volts : 100 -300v , driver protection requirement, high voltage protection and safety norms as per is , driver effici ency >85%, suitable for single phase 220v-240v 50hz ac. make : havells, syska, philips or similar. a w arranty/guarantee certificate with test report to be submitted at the time of material supply. [ warran ty period: 30 months after the date of delivery ] ] => limited