Thank you for viewing. I purchased this from the SwitchBot official website for around 60,000 yen at the end of October this year. We already had a smart lock at home, but I bought this because I was using SwitchBot for other appliances. However, it didn't fit our front door, so I'm selling it. There are two scratches on the Smart Lock Ultra unit. I'm not very knowledgeable about these devices, so I may not be able to answer questions. Therefore, I would appreciate it if someone with knowledge of the installation would purchase this. The double-sided tape on the base of the facial recognition pad is not included, so please prepare your own. Smart Lock and Facial Recognition PRO set, silver. Also includes a stepless height adjustment attachment. Please use it if necessary. - Model name: SwitchBot Lock Ultra