More :built in smart chip, full protection against over/under voltage input, over-current, overload, overhead, over-temperature and short circuit. 2 x Converter: 1 x a + 1 x b Waterproof Level upgrade:IP68,moisture-proof & anti-shock protection. Better Heat Dissipation:Upgraded fin type heat sink with a thick aluminum plate inside fixture to help to dissipate heat more efficiently.., Weight: 1.20372395052 pounds, Manufacturer: Frewurwer