The Chauvin Arnoux DigiFlex MA400 and MA4000 current meters feature a flexible sensor making it easier to wrap it around the conductor to be measured whatever its type (cable, bar, strand, etc.) and its accessibility. The sensor takes the form of a flexible coil connected by a shielded cord to a small housing containing the signal processing electronics and battery supply. They can be used for RMS measurements of current from 20 mA to either 400A AC or 4000A AC. The design of the snap-action coil opening and closing device allows it to be handled while wearing protective gloves.