FeaturesClamp meter combines the features needed for the professional electricianTrue RMS readings provide accurate results on circuits with harmonic distortionCapacitance, frequency, duty cycle and temperature functionsBuilt- in non-contact AC voltage detectorImpact resistant double molded housing also provides comfortable grip100 uF capacitance99% duty cycleDiode testAutoranging operationContinuity: Approx 30 Ohm audible thresholdApproximately 30 min auto power off100 - 600 V NCV (non-contact AC voltage)Easy to read-4 to 140 deg F storage temperature