ITEM NAME:DC-DC 9V/12V/24V to 5V USB Step Down Power Module 2A Precise Vehicle Charger FU Input voltage:7.5-28V Output : 5V/3A Conversion efficiency:96%(Max) Switching frequency:1.5MHz(Max) Typical 1MHz Working temperature:-40℃ - +85℃ Load capacity:3A(Max) Typical 2A Size:42*16*5mm Package Included: 1 x  DC-DC 9V/12V/24V to 5V USB Step Down Power Module 2A Precise Vehicle Charger.Load capacity:3A(Max) Typical 2A. Output : 5V/3A. Size:42 16 5mm.