VvW DC-DC Waterproof 30-60V 36V 48V to 12V 15A/180W Step Down Voltage Converter Car Power Supply modules,Die-cast aluminum Powered by VvW advanced technology. Widely used in Car device, such as LED Display, Hard Disk Player, MP3, DVD, GPS, etc, All epoxy sealed containers with Waterproof Housing; Used in vehicles, security systems, telecommunications, medical equipments, instruments etc Input range: DC 48V/36V (30-60v),Output voltage:12V/15A/180W.High efficiency:&gt;90%.Reliable, low heat dissipation max. 40 C; With overload / over-current / over / low voltage protection, stable performance. Light compact, convenient to use and transport; Auto recovery