The Fluke I410 AC/DC Current Clamp/Banana Plugs, 1A-400A AC/DC is a battery-powered, Hall-effect probe that measuress 1A to 400A AC/DC with a large-claw clamp, giving you access to difficult-to-reach areas. It is compatible with most multimeters and other devices that measure AC and DC current and accept shrouded 4 mm (0.16 in) banana plugs.