Check the listing for details. REPLACEMENT PART: Nest 2nd Generation Learning Thermostat: Stainless Steel READ. Color: Silver, Condition: Used. Listed at 61.95 USD. Nest 2nd Generation Learning Thermostat (Device Only) Stainless Steel Silver. You will only receive what is in the picture; however, you may receive a unit with slight cosmetic blemish(es) from normal use which do not impact the functionality of the unit. This listing is for a Nest 2nd replacement screen or display and does not come with any other parts or accessories required for install:If you have a defective Nest 2nd display and simply need a new one to replace then this listing is for you. If you already have a 2nd generation wiring base and seeking just a thermostat portion then this listing is for you. Again, this item is not a full kit and just a replacement part. This device is 2nd Generation and will not work with a 3rd Generation or Thermostat E wiring base. You must have a 2nd Generation wiring base for this to work which is circular with a rectangular input area.STORE SKU: NEST2NDSSDISSTORE SKU: NEST2NDSSDIS