... Protections:short circuit, overload, over temperature, low battery voltage, over battery voltage, lack-voltage alarm.8.Topology: Microprocessor9. ... (having frequency switch)4.Socket types: USA, Australia, universal, UK, France, Germany and so on5.The quantity ... , GPS, camera, PDA, cell phone, mobile DVD, audio, battery charger, printers, monitors, game consoles, etc.2.Field operations : lighting ...