Apple’s smart home platform is gaining another member: the Ecobee3 smart thermostat, the first connected thermostat to work with HomeKit. The Ecobee3 goes on sale today through Apple Stores across North America. It costs $249 and is essentially an alternative to Nest’s thermostat: it detects a home’s temperature and whether anyone is actually around and then adjusts heating and cooling accordingly, with the goal of saving homeowners some money. The thermostat can even be made a bit smarter by buying additional sensors (a pack of two costs $79) that can allow it to detect temperature and presence in other rooms of a house — one sensor is included with the thermostat itself.

A separate version of the Ecobee3 is already on sale, but this…

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