Pretty much every multirotor build requires some sort of voltage regulator to step down the flight battery voltage to a level which is compatible with flight electronics and FPV gear, often running at 5 or 12 volts. This micro BEC (battery eliminator circuit) does just that, it takes an input voltage of 7 - 21 volts and steps it down to either 5 or 12 volts, rated up to 1.5amps. Unlike other regulators which use a potentiometer to control the voltage and require a millimeter to set, the voltage output of this BEC is selected by a simple solder tab; by default it is set to output 5 volts, with the solder tabs connected it will output 12 volts.
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