By Alexei Oreskovic SAN FRANCISCO (Reuters) – Google Inc took its biggest step to go deeper into consumers homes, announcing a $3.2 billion deal to buy smart thermostat and smoke alarm-maker Nest Labs Inc, scooping up a promising line of products and a prized design team led by the godfather of the iPod. Nest will continue to operate as its own distinct brand after the all-cash deal closes, Google said on Monday. The deal is the second largest in Googles history after the $12.5 billion acquisition of mobile phone maker Motorola in 2012. Nest Labs appears to be focused on thermostats and smoke alarms, but its not far-fetched to see Google expanding this technology into other devices over time, said Shyam Patil, an analyst at Wedbush.