Smart thermostat
Smart thermostats are similar to programmable thermostats in the sense that they have a scheduling feature that allows users to set different temperatures for different times of the day. In addition to this feature, smart thermostats implement other technologies to reduce the amount of human error involved with using programmable thermostats. Smart thermostats incorporate the use of sensors that determine whether or not the home is occupied and can suspend heating or cooling until the occupant returns. Additionally, smart thermostats utilize Wi-Fi connectivity to give the user access to the thermostat at all times. These additional technologies have proven to make smart thermostats successful in saving users energy and money.
Ecobee
The ecobee4 is ecobee's flagship product which was originally launched May 3, 2017. It is a touchscreen thermostat that works with up to 32 remote temperature/motion sensors to adjust the thermostat based on where you are. It also has IFTTT integration. An updated version of the ecobee3 was released in 2015 that works with Apple HomeKit. The ecobee3 lite was released on October 17, 2016. The ecobee3 lite is a less expensive thermostat that resembles the ecobee3, but does not include any remote temperature sensors. Support for remote temperature sensors was added to the ecobee3 lite in March 2017.