[Product Information]

The output voltage can be higher or lower than the input voltage， turn the small screw on top of the pot to regulate the output.
With a voltmeter， press S1 to switch among three working mode: input voltage mode， output voltage mode and Alternate mode.
The starting state can be set freely by long pressing S1， three memory mode: [0] [1] [2] mean default display IN or OUT or IN/OUT alternate voltage.
On the right side is another momentary switch that is for turning the output on and off， you don't have to disconnect it to turn off whatever you have connected， more convenient to control the output.
Adopted high-power MOS tube to protect the circuit in case of connecting reversely， improve efficiency and reliability; the workmanship is excellent.