Sonel S.A. engages in the production and sale of measuring instruments and accessories for the energy, electrical, industrial, and telecommunications sectors in Poland and internationally. The company offers electrical safety measurements, including multifunctional installation, insulation resistance, earth ground, loop impedance, RCD, PV installation, and EV charging station testers; power quality analysis; safety of electrical equipment; low resistance measurements; thermal imagers and pyrometers; and illuminance measurements. It also provides location of cords and cables, and fault detection; handheld devices, such as multimeters, clamp meters, voltage testers, distance meters, and phase sequence and motor rotation tester; leakage current alarm; laboratory equipment; and high voltage equipment, as well as partial discharge measurements, battery and acoustic testers, and measuring sets. In addition, the company offers accessories, including clamps, adapters, test probes, crocodile clips and cramps, test leads, power and batteries, carrying cases and straps, tools, shunts, and other products, as well as accessories for thermal imagers and PAT series. Further, it provides Sonel Reader software to read data from memory of Sonel test instruments; Sonel Reports Plus software to create documentation after testing of electrical installation; Sonel MeasureEffect, a measurement platform; Pat Analysis, a software for PAT meters; Sonel ThermoAnalyze, a program that analyzes and reports for KT series cameras; and Sonel Analysis. Additionally, the company offers Sonel Multimeter mobile; Sonel PAT Analysis Mobile; Sonel CMM-60 Multimeter Software; SRP control software; LKZ Terminal and mobile; IR Thermometer software; Sonel TestPD; and VLF tester software; software for LXP light meter; Sonel MPI mobile; Sonel MRU mobile; Sonel MIC mobile; Sonel KT mobile; and Sonel Analysis mobile. Sonel S.A. was founded in 1989 and is headquartered in Swidnica, Poland.