Primepower DC-DC Converter is designed with the latest switching technology in DC to DC conversion, resulting with an efficiency above 96%. This brings a cool running product with minimal powerloss. The internal electronics is protected against wrong polarization and short-circuit which prevents damage to the device by misuse. Primepowers waterproof DC-DC Converters includes both regular DC-DC Converters and DC-DC Chargers. All models has IP67 enclosure, waterproof and very shock resistant. The aluminum housing makes the unit perfect for installation in harsh environments. All models comes with cables for input and output connections, as well as a cable for ON/OFF function.