Specification :

FM series Frequency Meter
features:
1) Single line 4 digit ( FM4) or 5 digit ( FM8) LED display;
2) Thumb switch setting alarm value;
3) 4 control mode: U-U, U-d, d-U, d-d;
4) One meter with multi-function, frequency / tacho / line speed selected by software;
5) Input / output optical isolation, high anti-interference;
6) With hysteresis setting to improve the stability of meter and system;
7) High accuracy, 0.1% F.S., decimal point float or fixed display to be optional;
8) Power supply: FM4: 85-265VAC, FM8: 220V / 110AC+ / -10% ;
9) Relay capacity: 250VAC / 3A, resistance load;
10) With auxiliary power output 12VDC+ / -10% , 50mA( max) ;
11) Measuring range: 0.1-5KHz