FieldSense technology for AC voltage, current and frequency measurement without making electrical contact to live voltage|Simultaneous voltage and current display shows all power supply measurements at a glance for efficient trouble shooting|True rms voltage and current|Works with wires up to 4/0 AWG with a 17.8 mm jaw opening|HOLD button temporarily freezes the reading for easy viewing|Easy to read display with backlight|Accepts optional Fluke TPAK ToolPak magnetic meter hanger for convenient operation