Home Slickdeals Sifely Model S Fingerprint Smart Door Lock $78.79 + Free Shipping w/... Slickdeals Sifely Model S Fingerprint Smart Door Lock $78.79 + Free Shipping w/ Prime By ARCOM - 26 April 2023 29 0 SHARE Facebook Twitter Go to the deal page: Sifely Model S Fingerprint Smart Door Lock $78.79 + Free Shipping w/ Prime