The Honeywell T Series is a portfolio of non-connected and Wi-Fi connected thermostats designed with contractors in mind. With an interface you know, features you trust and the Honeywell quality you depend on in a sleek new aesthetic, the non-connected T Series thermostats are setting the new standard for simple. NON-CONNECTED SOLUTIONS that simplify selection, installation and upsell. Simple selection: We’ve streamlined our legacy portfolio of 20+ non-connected FocusPRO® and PRO thermostats down to just six non-connected T Series thermostats, helping you simplify inventory management and product selection. Simple installation: All T Series thermostats use the same UWP mounting system, helping you standardize your training program, install process and truck stock. Install one and you can install them all. Simple upsell: The T Series features a snap-together design that enables you to easily move customers from a non-connected to a connected thermostat when they’re ready for Wi-Fi – without having to remove the connector and cover plate.non-programmable. Battery or C-wire. Display size: 2.37 sq. in. Replaces this FocusPRO or PRO model: TH1100DH1004, TH1100DV1000.