Where there's smoke, there's Universal Security Instruments. The company designs and markets (to 30 countries) smoke alarms and carbon monoxide alarms, as well as other safety products such as outdoor floodlights, door chimes, and ground fault circuit interrupter (GFCI) units. Universal Security Instruments has warehouse facilities in Maryland and Illinois. Most of its products are sold through retail stores and are designed to be installed by consumers. Products that require professional installation, such as smoke alarms for the hearing-impaired, are marketed to electrical products distributors by subsidiary USI Electric. The company was founded in 1969.