The versatile yet easy-to-use SONEL MPI-520 multifunction electrical installation meter flawlessly performs its tasks in measuring electrical installation parameters. The instrument was designed for the needs of installers and test engineers. Intuitive operation allows beginners to use the device, while advanced measurement capabilities will meet the expectations of the most demanding specialists. The economical and versatile SONEL MPI-520 meter is a proven choice for users looking for a simple-to-use, precise instrument that combines the functions of several devices for shock protection measurements. With a single meter, you can measure fault loop impedance (also in circuits with RCDs), earth resistance, as well as test parameters of AC, A, and B type residual current devices. Extensive capabilities, measurement precision, and the use of pioneering solutions combined with an attractive price make this meter model a proven and reliable choice.