RAE Systems by Honeywell (Stock Code HON) is a American manufacturer of Portable, Fixed, wireless & Toxic gas detectors. Products includes Single Gas, Multigas, VOC (ppb level), Radiation Monitors. RAE Systems, Inc. is a leading global provider of rapidly deployable connected, intelligent gas and radiation detection systems that enable real-time safety and security threat detection. RAE Systems products are used in more than 120 countries by many of the world's leading corporations and government agencies. RAE Systems offers a full line of wirelessly enabled solutions including personal, hand-held, transportable, and fixed instruments designed to meet the needs of any usage scenario.

RAE Systems' products are used by many U.S. and non-U.S. government agencies as well as by numerous city and state entities across the United States. RAE Systems' gas detection solutions have become a standard for companies within the energy production, refining, industrial and environmental safety sectors for a wide range of personal and plant safety and regulation compliance applications.