Nest Labs is a home automation producer of programmable, self-learning, sensor-driven, Wi-Fi-enabled thermostats, smoke detectors, and other security systems. It introduced the Nest Learning Thermostat in 2011 as its first product. The Nest Protect smoke and carbon monoxide detector was then introduced in October 2013. And, after acquiring Dropcam, the rebranded Nest Cam was introduced in June 2015. Co-founded by former Apple engineers Tony Fadell and Matt Rogers in 2010, the start-up company quickly grew to have more than 130 employees by the end of 2012. Google acquired Nest Labs for US$3.2 billion in January 2014 which had 460 employees in mid-2014 and continued its brand identity.