Z-max memory for loop tests " easy evaluation of the highest loop test value. Unique zero adapter for fast; always reliable and accurate test lead and mains cord compensation. Fast voltage measurement between L-N; L-PE and N-PE using the mains cord. No need to change measurement connections. Measure RCD trip current & trip time in parallel (RCD type AC and A). Two measurements at once and a dual display. PEFC or PSC and loop impedance are measured and displayed in parallel; saving you time.