Honeywell TH8320WF1029 Wi-Fi Touchscreen Programmable Digital Thermostat, Works with Alexa Works with Alexa for voice control (Alexa device sold separately). Use With THP9045 Wire Saver, C7089U1006 Outdoor Air Sensor The L terminal is an input or output.; Selectable: Programmable or Non-Programmable 4 9/16 in. high x 6 in. wide x 1 1/4 in. deep 7 Day Multiple Day Programming or Non-Programmable 10 square inch Touchscreen Display