Resideo | 67,411 followers on LinkedIn. At Resideo, we help you protect what matters most by creating technology and smart solutions that integrate seamlessly into your life. Our family of brands includes First Alert®’s smoke detectors, Honeywell Home’s smart thermostats, our ADI Global Distribution Business, and more to connect your entire home. We pride ourselves on our commitment to quality, innovation, and customer satisfaction, backed by a legacy of over 100 years in the industry.