Sonel Spółka Akcyjna is one of the largest Polish manufacturers of measuring instruments. For over 25 years, we have been producing professional devices designed to control the safety, technical condition, parameters and quality of power supply networks. We are constantly focused on expanding our product offer, because we are aware that along with the growing number of electricity receivers, the complexity of the network, and finally the increasing importance of reliable power supply in the entire economy, the number of measurement tasks for our meters increases.