RAE Systems, Inc. is a global provider of wireless, gas and radiation detection instruments and systems that enable real-time safety and security threat detection to help mitigate risk, and protect workers, contractors, the public and assets. RAE Systems is located in San Jose, California. The company was founded in 1991 by Robert I. Chen and Peter Hsi. The company’s competitors include Mine Safety Appliances, Industrial Scientific Corporation, and Dräger. Some of its customers include BP, Chevron and Total Petroleum in the energy sector; the United States Air Force and Navy and Department of Homeland Security in the government sector; DuPont and Formosa Plastics in other industry sectors. Robert I. Chen and Peter Hsi founded RAE Systems in 1991 to apply sensor technology to monitor toxic chemicals for environmental, industrial safety, energy, HazMat, emergency response and government applications. The co-founders started the company after selling Applied Optoelectronic Technology Corporation, a manufacturer of computer-aided test systems, to Hewlett-Packard.