WESCO International, Inc. distributes electrical, industrial, and communications maintenance, repair, and operating (MRO) and original equipment manufacturers products and construction materials in North America and internationally. The company sells general supplies, such as wiring devices, fuses, terminals, connectors, boxes, enclosures, fittings, lugs, terminations, wraps, splicing and marking equipment, tools and testers, safety, personal protection, sealants, cutting tools, adhesives, consumables, fasteners, janitorial, and other MRO supplies; communication and metering devices, and racking systems; and solar modules, connectors, and storage batteries. It also distributes wires, cables, raceways, metallic and non-metallic conduits, and coupling and fittings; and communications and security products, including structured cabling systems, broadband products, low voltage specialty systems, specialty wire and cable products, equipment racks and cabinets, access controls, alarms, cameras, and paging and voice solutions. In addition, the company sells electrical distribution and controls comprising circuit breakers, transformers, switchboards, panel boards, metering products, and busway products; lamps, fixtures, ballasts, and lighting control products; and motor control devices, drives, relays, timers, pushbuttons, operator interfaces, switches, interconnects, programmable controllers, industrial computers and network, and surge and power protection products. Further, it provides supply chain management and logistics services; and value-added services in the areas of construction, e-commerce, energy and sustainability, engineering, production support, safety and security, supply chain optimization, training, and working capital. It serves industrial firms, electrical and data communications contractors, utilities, commercial organizations, institutions, and governmental entities. The company was founded in 1922 and is headquartered in Pittsburgh, Pennsylvania.