Ever have one of "those" moments? Well, you are not alone. We are working to make the Sigzig so it helps avoid those moments by offering +-5V low-noise data logging with overvoltage protection up to 50V indefinitely. Check out this video to see Paul hit the Sigzig with 30V and then use that same input to measure his heart rate.

I know that there have been times where I'm measuring a circuit with multiple voltages. Its not uncommon to accidentally hook up to the 12V line when you meant to tap into 5V signal. Now if you do this, you will still be totally okay. A little peace of mind is a good thing.