The Robin KMP 4120DL remains the only tester of its type able to perform loop tests without tripping most passive RCD’s.

Using its Robin patented D-Lok system it is the first choice for those who appreciate the limitations imposed by the hazardous and time consuming practice of isolating circuits and bridging out RCD’s prior to testing. With 3 pre-selectable loop impedance and PSC ranges it also indicates the correct or incorrect status of the circuit wiring under test.