Honeywell Home T9 Smart Thermostat review: Remote sensors are the star attraction here

T9 isn’t the sexiest name for a new product, but most homeowners will be familiar with the Honeywell brand (now Honeywell Home, after its parent company spun off its residential division as Resideo Technologies in late 2018). More importantly, the Honeywell Home T9 Smart Thermostat is a big step up from anything the company has offered