Digital ELCB (RCD) Tester
Very low consumption.
Microprocessor controlled. 
Menu Driven. 
Accurate digital readout of disconnection time. 
Automatic Data Hold function. 
Zero crossing circuitry permit testing at 0° or 180°. 
Disconnection phase polarity shown on L.C.D. 
Auto-off and off override. 
Polarity trip indicator (positive or negative phase). 
Wiring polarity indicator. 
Measure voltage between line and earth before testing.
IEC/EN 61010-1 CAT III 300V
Indicates frequency of voltage L-E.