SONEL was established in June 1994 by electrical engineers who had a good knowledge of specialised electrical test equipment. Today they operate from their modern factory and head office based in Swidnica, and have a reputation in Poland as a manufacturer of high quality test equipment .

SONEL aims to make electronic products which meet the requirements for the power generation and telecommunications sectors. Their Test and Measurement instrument range encompasses Power Quality Analysers, Multi Functional Testers, Thermal Imagers, Low Resistance Ohmmeters, Phase Sequence Testers, Wire Tracers, Clamp Meters, Multimeters, Pyrometers, Illuminance Meters, UV Corona Camera and High Voltage Insulation Testers.


Intereng was founded in 2006 by experienced engineers and managers with production concepts, product platforms and market knowledge in modern fault locating devices. Intereng Tech registered in 2008 and after participation in Germany’s top industry show for cable network operators was awarded a major contract for the first supply of six automatic test vans to a major European utility.  The companys product range includes a Time-Domain-Reflector family for analysing and locating core cable faults and a pinpointer family including a high precision sheath fault pinpointer.

Their recent release of an all-new portable line of automated systems has seen new benchmark in performance and ergonomics. Boosting top engineering, convergent technologies and modern user interfaces the new devices enable faster, safer and easier workflows.