Charles Industries, Ltd. operates as a manufacturing and technology company. The company offers telecommunication products that include copper pedestals and enclosures, fiber pedestals and enclosures, multi-purpose housings, apparatus cases, DSL line conditioning, pots line conditioning/load coils, cable stubs, wire terminal housings, and riser pipes and wire guards; and broadband access and transmission products, such as broadband multiplexers, broadband multiplexer remote terminals, extended-reach DSL, T1 channel banks T1 span termination/mini-repeaters, digital pair-gain systems, and transmission and signaling products. It provides AC marine power solutions that include power inverters, C-power isolation and boosting transformers, smartboost universal transformer boosters, C-power Iso-guard, C-power AC Automatic control systems, C-power surge suppressors, and C-power PM3 AC power management systems; DC marine power solutions, including in-charger programmable battery chargers, C-charger battery chargers, C-charger multi-stage regulators, C-charger battery isolators, C-power continuous duty power supplies, and battery switches; ship-to-shore communications solutions, which include C-phone marine communications system and C-phone handset quick reference; shore power solutions; and safety solutions. The company offers industrial-grade electronic and ferroresonant battery chargers, DC-to-AC power inverters, and transformers for use in electronics manufacturing. Charles Industries, Ltd. serves the telecommunication, utility, marine, and industrial industries worldwide. The company was founded as Coil Sales, Inc. in 1968 and is headquartered in Rolling Meadows, Illinois.