Measurement of AC leakage current,large current. 1. Model No.:ETCR7100A 2. Current Range : AC 0.0mA~4000A 3. Data Storage : 99units 4. Frequency : 50Hz ,60Hz automatic identification 5. Sampling Rate : 2 times/second 6. Power Supply : 6V DC(LR6×4 alkaline dry batteries)