Global revenues from smart home automation systems will grow at a 21% CAGR between 2015 and 2020, according to ABI Research. North America will account for the lion's share of the smart home automation system revenues in 2020, close to 46% globally, followed by Europe and Asia-Pacific. Regional differences are reflected in device adoption. In 2014, North America and Western Europe witnessed increased adoption of security cameras, especially those with embedded motion sensors that were used not only for home security but also indoor activity tracking. In China, due to increasing concern about air quality, environmental sensors are gaining popularity.
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