For use with Universal Chinese Meter
I bought it and tried it because there was not even the sign that the tachometer worked at all though I attached a Chinese Digital meter.
I did the wiring as described in the manual, and it worked fine with the settings for 2nd.
It seems that even the Digital type thing of UniversalMeter works or does not work according to Spec.
I was lucky to be able to use it against my expectations, although it is natural that it does not work because it is not the original usage.

