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1F87U-42WF SENSI 135 WF 80 SER PROG TSTAT This versatile thermostat is designed to provide precise temperature control and energy efficiency for your home or office. Featuring an easy-to-read display and intuitive controls, this thermostat allows you to customize your heating and cooling preferences to maintain optimal comfort year-round. With programmable settings, compatibility with various HVAC systems, and optional smart features, itÕs the perfect solution for managing indoor temperatures efficiently. Enjoy improved comfort, reduced energy costs, and convenient control at your fingertips.