This is a basic voltage regulator, based on the AMS1117-5.0V integrated circuit. It is a must have product for the 5V electronic prototypes, allowing you to power the circuit from a wide range of input voltages. A maximum of 12v input can be applied. This nice little board also have LED which turns on when input voltage is applied.
On-chip trimming adjusts the reference voltage to 1.5%. Current limit is set to minimize the stress under overload conditions on both the regulator and power source circuitry.