Apply to equipotential bonding resistance testing between metal components, the transformer windings DC impedance testing. Measurement of DC low value resistance, contact resistance, riveting resistance, wire length, etc. 1. Model No.: ETCR3700 2. Range: 0.0001Ω~30.00kΩ 3. Data Storage : 400 groups 4. MaxTest Current :≥2A 5. Detection Mode : Precision 4-wire method, 2 channel A/D simultaneous detection 6. Power Supply : DC 7.4V 2.6Ah, rechargeable lithium battery, full charge about 8.4V