Martindale e ze check xtra pro kit martindale ez650 similar to the martindale ez150 order code 85 2524 the martindale ez650 e ze earth loop impedance socket tester carries out the same range of tests but in addition it can test light fittings junction boxes and terminals this achieved because the martindale ez650 kit has an iec socket with an interchangeable 3 pin adaptor and 3 way fused lead set martindale ez650 e ze check xtra pro kit