I find myself using a passthrough a lot and after all the praise here about VV, I would like to give it a try. This seems like a cheep ($7.51) way to give it a whirl. Any thoughts or experiences?

- Voltage switch: press 5 consecutive times, each time interval is less than 500 ms
- Electronic cigarettes will be on the output voltage of 3.2 V / 3.2 V / 4.2 V / 4.8V switch, LED lights flashing five times.
- Can be directly inserted into computer.

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