SONEL S.A. is a Polish manufacturer of high-quality measuring instruments for power generation and telecommunications sectors.

The meters are used to measure :
- fault loop resistance and impedance
- insulation resistance
- earth resistance and soil resistivity
- residual current protections
- current, voltage

We also offer :
- multifunctional meters which combine the above-mentioned features
- thermal imagers
- low resistance meters
- phase sequence testers
- wire tracers
- power quality analyzers
- clamp meters
- multimeters
- pyrometers
- illuminance meters