The Amprobe AM-530 autoranging digital multimeter is the multimeter of choice for professional electrical contractors. The AM-530 is a True-rms digital multimeter so it accurately measures voltage on systems affected by harmonics. With its full menu of digital multimeter features, you can use it to: measure and verify the presence of voltage before connecting new equipment or performing repairs; run new wiring; check continuity of electrical connections; identify blown fuses; troubleshoot motors or check transformers. The CAT III 600V safety rating provides an extra measure of safety for high voltage multimeter applications. Its built-in flashlight helps you see wire colors in the dark and “third hand probe holder gives you an extra hand when you need it.