ecobee 4 Smart Thermostat with 2 Room Sensors

Very smart system.Even DTE installed it for free at my house.

maybe somebody has a smart A/C :D //@anonymous: Right on the point: Remote sensor is just a commercial joke. The sensor CANNOT regulate the temperature in one specific room. If you want your cold room to be warmer, your central A/C has heat up the entire house. Same for cooling down. For local comfort, it is better to have a local heater. As to the Alexa function, you might want to google how many people want to turn it off. When one does that, a steady of full circle of red-light is on and cannot be turned off.
To me, the remote sensor is the biggest joke.
//@Anonymous: hot rooms are going to be hotter and cold rooms are going to be colder, unless you control the registers or zone your rooms. Don't waste your money on this.

Right on the point: Remote sensor is just a commercial joke. The sensor CANNOT regulate the temperature in one specific room. If you want your cold room to be warmer, your central A/C has heat up the entire house. Same for cooling down. For local comfort, it is better to have a local heater. As to the Alexa function, you might want to google how many people want to turn it off. When one does that, a steady of full circle of red-light is on and cannot be turned off.
To me, the remote sensor is the biggest joke.
//@Anonymous: hot rooms are going to be hotter and cold rooms are going to be colder, unless you control the registers or zone your rooms. Don't waste your money on this.

hot rooms are going to be hotter and cold rooms are going to be colder, unless you control the registers or zone your rooms. Don't waste your money on this.