The Metrotest MPAT10 has many variants. Specifications listed below are for the 230V version. The MPAT10 is a rebranded Seaward PAT1000s Supply Voltage Earth Bond Insulation Resistance Leakage Flash Calibration 240V 8A,25A Accuracy +/- 5% rdg + 2 digits 500V d.c Accuracy +/- 5% rdg + 2 digits 0.3 - 6mA 1.5kV (I) 3kV (II) Accuracy +/- 10% rdg + 60uA 0.3 - 6mA +/- 5%+150uA YES Cost £40 Example Result Metrotest MPAT10 PAT Tester Electrical Calibration