Speedway Series 1000 Amp Digital Clamp Meter AC current -- 0.1 A to 1000 A Resistance -- 100m ohm to 20K ohm Continuity test -- 50 ?? 25 ohm with audio tone Insulation test -- 100K ohm to 2000M ohm AC voltage -- 1 V to 750 V, DC voltage -- 1 V to 1000 V