Take your CASSY device and measure voltage, current, force and magnetic field with your smartphone or tablet. This Multimeter supports currently. Input A of Sensor-CASSY 1 and 2, Pocket-CASSY 2 and Mobile-CASSY 2, Micro-CASSY U and I. Supported quantities: U, I, F, B Select CASSY after pressing the menu button in the upper left corner.