Vine Programmable Thermostat For House With 4.3" Touch Screen, Wifi Smart, 919T Product Features ?????-???????? ????????????High-resolution display 4.3" larger color screen, this smart thermostat is easier to read and operate, besides automatically adjusts its brightness based on the room lighting ????????? ??????? ????? ????????Control and monitor the wifi thermostat from anywhere using Vine Thermostat App or Smart Life App; Compatible with Alexa and Google Home for hands-free voice control ????? ????? ?????? ???????7 days programmable schedules with Auto Home/Away mode, the wifi thermostats for home automatically adjust room's temperature, keep your home in a comfortable temperature when you arrive, meanwhile helps you save much on HVAC expense ????? ??????????????This home programmable thermostats is compatible with 90% of system(24V AC System): Conventional (2H/2C)-Gas, Oil, Electric, Boiler; Heat Pump(2 stages Heat/Cool + 2 stages Aux/Emerg.); Heat or Cool only Systems. ??? ?????? ????? ??????? ? ?????? ???? (?-????) ?????? ????????? ??????????Features data encryption securiby, support OTA, Wi-Fi auto reconnect, fan Control and weather forecasting functionality, our home programmable thermostats ensuring your convenience and peace of mind in daily life ?????? ????????Our smart thermostats for home can be installed easily in 20 minutes or less with step-by-step online guides and videos Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!