Honoree and founder of Nest, Tony Fadell, arrives at the Time 100 gala celebrating the magazine's naming of the 100 most influential people in the world for the past year in New York April 29, 2014. REUTERS/Lucas Jackson

(Reuters) – Alphabet Inc unit Nest, which makes smart thermostats, said Chief Executive Tony Fadell would step down.

Search giant Google bought Nest in 2014 for $3.2 billion, aiming to lead the way on how household devices link to each other and to electricity grids.

Marwan Fawaz will replace Fadell, the company said in a blog post. (http://bit.ly/1r5SIvV)

(Reporting by Narottam Medhora in Bengaluru; Editing by Maju Samuel)

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