C.A 751 is part of the Chauvin Arnoux suite of measuring instruments, designed to measure amperage, voltage, continuity, frequency, resistance and a variety of other electrical parameters. It is a portable, pocket-sized device with a 2-line LCD display and up to 10 measuring functions. The unit is powered by two AAA alkaline batteries and features a hold button, select button and plus/minus buttons. The C.A 751 also has a range of protection functions and includes a temperature probe, which can be used to measure temperatures up to 500°C.