Convert unstable 12/24V DC power supply into stable 5V 3A DC power output This Voltage regulator widely used in automotive, surveillance systems, railway signals, medical equipment, instruments and meters, LED products, LED strips, cable TV and other low power test systems Input voltage: 12/24V ,Output: 5V/3A Convert unstable 8V-40V DC power supply into stable 5V 3A DC power output Essential for car audio system or other 5V car products (particularly useful in vehicles with 24V power supply)