Hello, these are electronic locks I ordered from China, but unfortunately they did not fit my doors due to my door design. There are 5 locks: 3 exterior 2 interior The colors are black with dark gray. For sale to the highest bidder. I'm willing to sell easily, but without undervaluing. It's not necessary for me to profit, but I don't want to lose money on them. The locks are similar to those sold by Smart Store, and according to the supplier, he is the one who manufactures them. Most entry methods are available: fingerprint, password, entry card, app, and others.