Clamp On Earth Resistance Tester, Bluetooth Compatible No, CAT Safety Rating CAT IV 600V, Calibration Certificate Available Separately, Data Logger Yes, Dustproof Yes, IP Rating IP30, Jaw Capacity 1.5 in (39mm), Leakage Current Range 0.5 mA to 35 A, Maximum Ground Resistance Measurement 1, 500 ohm, Number of Records Stored 256, Resistance Accuracy High Range +/-35 Percent, Low Range +/- 1.5 Percent, Test Current 3 A, Test Voltage 25 V, 50 V, Communication Protocol Bluetooth, Battery Size AA. This item has been restricted from sale in the following state (s): []