Chauvin Arnoux CM625 [P06232003] 400A AC/DC Multimetrix TRMS Auto-Ranging Clamp-on Meter. The Multimetrix COMPACT and ergonomic model CM 625 is specially designed for applications on small electrical installations. The CM 625 multiple measuring clamp offers the HOLD function and TRMS measurements. Multimeters are equipped with all the functions of a clamp-on ammeter and a quality multimeter. They are the ideal work tools for all electricians and electrical technicians.