Relpol S.A. manufactures relays worldwide. It offers signal relays, miniature relays, time relays, interface relays, solid state relays, supervisory relays, modular installation relays, and plug-in industrial relays. The company also provides switched-mode power supplies, astronomical and digital clocks, electricity consumption meters, single and three phase power controllers, and installation contractors. Its products are applied building and industrial automation, energy sector, railways, solar inverters and charging stations, lightning control relays for DIN rail, electronics, as well as ventilation, air conditioning, cooling, and heating systems. The company was founded in 1958 and is based in Zary, Poland.