Measures AC/DC voltage up to 1000V, 600A AC Current, 60M? Resistance, DC millivolts and microamps. Automatically ranging True Root Mean Squared (TRMS) measurement technology for accuracy CAT IV 600V, CAT III 1000V, Class 2, Double insulation safety rating. Clamp measures AC current and inrush current. Two K-Type thermocouple ports for differential temperature measurements.