* It is used for quick checking of the pin assignment of a safety socket as well as for verification of the RCCB with the 5 rated tripping current settings of 10 mA, 30 mA, 100 mA, 300 mA and 500 mA.
* Phase detection and phase inversion.
* Indication of plug assignment via 3 LEDs.
* Display of tripping pulse current for residual currents.
* Operated without battery, direct power supply from the mains socket to be tested.
* Handy & compact ABS plastic housing case.