Chauvin Arnoux MA400D-170 [P01120575Z] 400A AC DigiFlex Ammeter with Flexible Sensor 170mm. An ideal addition to the electrician’s kit of tools and measuring instruments, the DigiFlex can be used for TRMS AC current measurements while also providing a solution when access to the electrical conductors is difficult. The range comprises 5 models. The MA400D version, whose measurement range starts at 20 mA, is designed for work in residential conditions and can also be used to check electricity distribution points up to 400 A. The MA4000D version can be used on higher-power installations in industry and the energy production sector. Although it is a high-performance instrument, the DigiFlex remains very simple to use: 2 buttons are all it takes to start the instrument, deactivate the automatic power-off function, HOLD the value on the display or store the maximum value (MAX HOLD). The values are read directly on the built-in 4,000-count display. It is also particularly practical, as the shape of the casing is designed for comfortable handling, the articulated, magnetic MultiFix system makes it simple to position and the velcro strap facilitates storage.