Stack’s Alba Smart LED light bulbs are ready to react based on where you are. Using embedded motion sensors, the bulbs can detect when you’re in the room and turn the lights on and off. Inside is an ambient light sensor, allowing the lights to automatically change from a hard white to a softer white, depending on the light in the rest of the room. As an added perk, Alba bulbs work with Nest to keep the heat up when it senses you’re home during those blustery winter days.

 

[Source:- Tomsguide]