The Stanley Intelli Tools FatMax Smart Clamp Digital Multimeter is highly reliable with a compact, handheld design. Contains all the necessary features to measure DC and AC voltage, DC current, resistance, battery voltage, diodes and forin-circuit continuity test. AC current is measured through the clamp, any other measurements are done through cables like a normal digital multimeter. The Smart Function automatically detects the correct measurement. A 'Hold' function allows you to hold a value for a few seconds. It has a 3.5in LCD display with a dual display option, allowing you to keep 2 values on the screen at the same time. Encased in a robust housing with anti-drop performance. Specification Voltage AC/DC 600V. Resistance 10M ohm, Continuity & lt40 ohm. Frequency 3 kHz. Power 2 x AA Batteries (supplied).