Voltage Regulator for light string

This voltage regulator was designed for one to connect the Fairy Light strings to the 12 volts of a dollhouse.  It also provides a means to power individual LEDs by converting 12 volts down to 3 volts.  This unit comes with three JST connectors to allow one to have three separate 3-volt circuits.  There are three output sockets for three different Fairy light strings to plug into or three separate 3 volt circuits.  The circuit board works with a 12-volt DC power supply only.  I actually set the boards to 2.9 volts.