Discountinkllc &copy; Dc/dc Converter 12v to 5v 3a 1a Add USB to Car Power Regulator Voltage Step Down DC 12V to 5V 3A 2A 1A 15W Step Down Converter Regulator Provide 2 USB charging ports for auto, Module Properties: non-isolated buck, Input Reverse Polarity Protection: No, if necessary, enter the series diode Light compact, convenient to use and transport, Rectification: synchronous rectification, Short circuit protection: sustainable, self-recovery All epoxy sealed containers with Waterproof Housing, With overload/over-current/overheat/low voltage protection, stable performance Operating Temperature: Industrial (-40 to +85) (ambient temperature exceeds 40 degrees, lower power use, or to enhance heat dissipation)