... safety protection 5A step down 24v to 12v dc dc converter 1. Efficiency:>85%2. 24v dc ... the Internet, GPS, camera, PDA, cell phone, mobile DVD, audio, battery charger, printers, monitors, game consoles, bus, ... Carton Carton Carton Usage 1.Keep the converter in ventilation and dry environment. 2.Connect ... current of converters. 4.Switch on the electricity to power the converters, the indicator turns on. ...