Do you want to take a swing at how many connected home devices people will buy in 2020? A whole lot would be a good guess given consumers ever-burgeoning interest in the technologies, and new analysis released by Parks Associates this week suggests more than 442 million connected consumer devices could be sold in the United States in 2020. Those include connected entertainment, mobile, health, and smart home gadgets. The firm says personal assistant devices, which include speakers with voice control such as the Amazon Alexa and Google Home, are the fastest growing category with a compound annual growth rate (CAGR) of 78.3 percent in 2015-2020.

Parks Associates SVP Elizabeth Parks stresses that voice control is the top trend for 2017 in the IoT and smart home space, and that consumer interest will continue to grow in that area during the next few years. “Parks Associates research shows U.S. consumers will buy more than 2.3 billion connected devices between 2015 and 2020, and they are showing strong preferences for voice as the interface for their devices,” Parks says. “Companies in the smart home, entertainment, and connected car ecosystems are pursuing partnerships that can add voice control to a variety of solutions in the connected home.”

The research firm released the forecast during its pre-show research workshops for its Connections conference that’s taking place at the Hyatt Regency San Francisco Airport this week. More information is here.