This product comes with a chip, so it can be registered if your apartment supports it. There are also Rakkey keys that start with TLRS2, so please check the model number carefully before purchasing to see if registration is possible. This is TLRS. Also, please understand how to register before purchasing. You will need to request registration from the locksmith designated by your apartment. In that case, if you purchase this, you will only need to pay the on-site registration fee. This can be used in conjunction with a PR-type key. Please open and set it with a precision screwdriver. It can be used alone without setting the key, but we recommend purchasing a separate attachment to cover the bottom. The locksmith should have it, so please consult with them. It's not very expensive. The color identification parts will come off unless the key is set, so we will tape them in place for shipping. Please understand that the battery needs to be replaced.