All epoxy sealed containers with Waterproof Housing. With overload/over-current/overheat/low voltage protection, stable performance. Short circuit protection: sustainable, self-recovery. Input Reverse Polarity Protection: No, if necessary, enter the series diode. Module Properties: non-isolated buck. Light compact, convenient to use and transport. Rectification: synchronous rectification. Operating Temperature: Industrial (-40 Celsius to +85 Celsius) (ambient temperature exceeds 40 degrees, lower power use, or to enhance heat dissipation). Input voltage: 12V Output voltage: 5V Dual USB output Jack Output current(MAX): 3A,total. Rated power: 15W Conversion efficiency: up to 96% Soft-start time: 500mS Output ripple: 50mV (MAX) 20M-bandwidth Dynamic response speed: 5% 200uS Usb cable length:30cm(from regulator to usb connector) Size: 46x27x14mm Material: ABS plastic housing Packaging include:1 x DC12v to 5v 15W dual Converter Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.