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Company Products>Enclosed Switching Power SupplyDh-h30W  Product Introduction  See Big Picture Brief： Enclosed Switching Power SupplyD-30W Right Features:· AC input voltage range selected by switch · Small volume，low weight，high efficiency · Protections:short circuit/over load · LED indicator for power on ·100% full load burn-in test ·2 Years warranty   http://www.cnhwele.com/ 。