I'm looking for Jumptronix style meters.. that show actual voltages. Anyone here use'em? Does the meter range from 0 to 1v or 0 to 2v? I know the O2 only puts out 0-1v, but I've read that GadgetSeller's meter goes from 0-2v. Anyone?

 

I think, more important is the sampling rate. Digital meters are pretty low, like 2-5 samples per second whereas the led versions are always reading the voltage. Either way, they'll give you the same results as a voltmeter reading 0-5volts.

 

Oh, so O2's do put out 0-5v signals?

 

No, sorry. It is like 0-1.2 volts.

 

The new Apex pen type turbo timers have a digital A/F meter that tells th voltage as well....its pretty inaccurate sometimes...