Emerson Sensi ST55 Wi-Fi Smart Thermostat for Smart Home lot of 2 These are preowned one is missing a back cover one is missing the front pad cover. One has writing on the front the other has scratches Both show signs of use. You are buying these as is because I don't have a way of testing them. We combine shipping check out our other listings ( lots of HVAC PARTS) What you see in the photos is exactly what you will receive. This was new and sealed in its anti-static bag. I opened it to take photos and to identify the item We are wholesaler/liquidators. We bought this in a lot of new items to resell. Our knowledge of this item is very limited. We are counting upon you to know what you are buying and if this item will suit your needs. This is being sold AS-IS. No returns. Please only purchase this if you agree to those terms. DIY your smart home with the Sensi smart thermostat. Compatible with most residential HVAC systems ? no common wire (c-wire) required in most applications. You can trust Sensi as we do not sell your personal information to third parties. And Sensi comes with the dependable performance and reliability you can count on from our 100 years of HVAC experience. With our top-rated mobile app and easy installation process, customers of all comfort levels can make the switch to a Sensi smart thermostat. For more information on Compatibility, Energy Savings, and Privacy Protection, please refer to the ?Product Documentation? section below. Shelf I LB