MT4W-DA-4N

The MT4W-DA-4N is a 4-digit Digital Multi Panel Meter with 7-segemnt LED display. It measures the frequency of input signal when it is AC input. The measuring range is 0.1 to 9999Hz, it is changes according to the decimal point position. 

It sets the display values as a zero when minimum input is supplied at measuring input terminal.
NPN open collector output
Current output scale function
Error display function
Prescale function
Gradient correction function
Display cycle delay function
High/low scale function
DC ampere measuring input