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PureAire Monitoring Systems, Inc., based in Lake Zurich, IL, has been dedicated to innovative oxygen sensing and gas monitoring since 1997, with a mission to keep people safe. The company offers a range of products, including oxygen deficiency monitors, combustible gas detectors, and toxic gas monitors, serving various industries such as biotechnology, pharmaceuticals, and agriculture. With over 27 years in business, PureAire has built a reputation for high-quality products and exceptional customer service, as evidenced by positive testimonials from clients like Cornell University and the Department of Energy. Their devices are known for reliability, long sensor life, and ease of installation, making them a preferred choice for organizations requiring precise gas monitoring solutions. Generated from the website

EMERgency 24 provides alarm monitoring and security services to protect thousands of subscribers and their properties and possessions nationwide. Established in 1966 and incorporated in 1967, EMERgency 24 became the first alarm monitoring company that catered exclusively to alarm installation dealers. The company continues to offer its services to more than 1,500 security dealers throughout the United States. EMERgency 24 has also been selected to monitor many federal government installations and branches of the U.S. Military. The company monitors alarm systems for burglars, fires, hold-ups, medical emergencies, boilers, sprinklers, mechanical failures, wireless systems and closed-circuit television. In addition, EMERgency 24 monitors openings, closings and temperature changes. The company is based in Chicago.