Thermostat , Robert Shaw Controls

I do not know anything about these , purchased from Storage Auction. They are NEW in opened box as seen in photo. These are a Robert Shaw Controls Thermostat model #EA27B-17-36 MPN #9781315. Please message me if there is any questions or information on this item. Please look at all photos , what you see is what you get upon purchase , sold as is. Comes from pet smoke-free environment purchased from Auction. FREE SHIPPING.