EASYTEST conducts testing of electrical systems according to IEC/EN 61557-1, specifically measuring protective conductor continuity, insulation resistance (with PI and DAR calculations), overall grounding resistance, Type A RCD and tripping time and current, line/short circuit impedance with short circuit current calculation, phase sequence, and compliance. The device is equipped with an innovative AUTO function: selecting this function and setting only the RCD current value, EASYTEST sequentially performs tests of grounding resistance, RCD tripping time, and insulation resistance. After completing the test, the device displays all results with indication of compliance or non-compliance with standards using simple OK or NOT OK symbols. Internal memory allows storing measurements and later transferring them to a PC via optical/USB connection.