The Ames? True-RMS digital multimeter has a full menu of features. Use this professional multimeter to measure and verify the presence of voltage before connecting new equipment or performing repairs. The LoZ feature helps detect the presence of “ghost voltage” when installing cable or tracing faults on cable runs. Its µA and temperature measurement features are designed for HVAC applications, testing flame sensors, and making temperature measurements. This meter is fully safety rated to CAT III 1000 V providing an extra measure of safety for high voltage applications and has been independently tested by ETL.