Input voltage: 12/24V (8V-40V),Output: 5V/15A 75W Convert unstable 12V / 24V DC power supply into stable 5V 15A DC power output Essential for car audio system or other 5V car products (particularly useful in vehicles with 24V power supply) Application: Widely used in automotive, electricity, surveillance systems, railway signals, instruments, and meters, LED displays(LED strip, copper led strings), cable TV, etc Muti-Protection Higher Security: Shockproof, Over-current Protection, Over-voltage Protection, Over-temperature Protection, Short-circuit Protection, much safer for users