Klein Tools CL490 Dual Display Clamp Meter Is Auto-Ranging For Precise Measurements With A Secondary Display For Easier Viewing In Tight Spaces. The Meter Reads Ac/DC Current, Voltage, Resistance, Continuity, Frequency, and Capacitance All With True RMS Accuracy. It Features Diode Testing and Temperature Is Taken, Via Thermocouple. There Is NCV Detection With Audio-Visual Alerts For Additional Functional Applications. to Ensure Visibility In Any Lighting, There Is A Backlit and Hi-Vis Display.