1000A Digital Clamp Meter | ACM-1000Description 1000A Digital Clamp Meter Clamp Meter with automatically ranging true mean squared (TRMS) technology for increased accuracy. Features Features Test leads measure AC DC voltage, resistance, continuity, frequency and capacitance and tests diodes CAT IV 600V, CAT III 1000V, Class 2, Double insulation safety rating 45MM clamp opening for a wide range of applications Unique design with grooved housing for superior grip Non contact voltage