The GNB SCRFLX battery chargers are convection cooled, solid state, micro-processor controlled SCR regulated chargers designed to make battery charging simple. They are designed to charge flooded lead-acid batteries only. The charger has a comprehensive self-checking diagnostic program to control all charger functions, monitor the quality of charge and check its own safety conditions. Large easy to read LEDs, three button keypad and LED display report on charger and battery status. The unit is 120/208/240V. FOB Lake City, PA.