https://m.youtube.com/channel/UCcnv3YFhb8f0006Qyr_ghAA
Voltage Range In: 0V - 5V
Quantization Levels: 16
Set the voltage in with the voltage source on the right (green wire).
Keep pressed the button on the left until the LED on the right turns off, that's the EOC.
The display indicates the level (0 - F).