Never been used (plastic film over screen). Only opened to verify contents and take photographs. Screws and mount with command strips included. Batteries are not expired. Not compatible with Gen 1 systems. If you don't which generation you possess, send me a photo of your base station. Items shipped next business day. Thanks for looking! Over 500 completed SimpliSafe transactions :) Also, I have motion sensor, entry sensors, and panic buttons listed separately.