Photo 1 of Sensi Lite Smart Thermostat, Programmable, WiFi, Easy DIY, Works With Alexa, ENERGY STAR Certified, ST25W, Most Systems C-Wire Not Required, C-Wire needed with Heat/Cool Only & Heat Pump System -White

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Photo 1 of Sensi Lite Smart Thermostat, Programmable, WiFi, Easy DIY, Works With Alexa, ENERGY STAR Certified, ST25W, Most Systems C-Wire Not Required, C-Wire needed with Heat/Cool Only & Heat Pump System -WhitePhoto 2 of Sensi Lite Smart Thermostat, Programmable, WiFi, Easy DIY, Works With Alexa, ENERGY STAR Certified, ST25W, Most Systems C-Wire Not Required, C-Wire needed with Heat/Cool Only & Heat Pump System -WhitePhoto 3 of Sensi Lite Smart Thermostat, Programmable, WiFi, Easy DIY, Works With Alexa, ENERGY STAR Certified, ST25W, Most Systems C-Wire Not Required, C-Wire needed with Heat/Cool Only & Heat Pump System -White