One time Password
This one time password works like an authenticator. Password can only be viewed on setting page and password generated can only be used once within 15 minutes. No connection is required. Best used for visiting relative while you are away.
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To enter via passcode, tap on the panel once to light up the keypad. Enter the correct passcode and press ✅ to confirm.

One cool implementation with the passcode unlock is its anti-peeping system. Say you have a passcode of 123456. You can enter any giberish number with your actual passcode in between. For example, entering 58892[123456]213 will unlock the door successfully. Anyone will have a hard time guessing the correct passcode.

If passcode is entered incorrectly for 5 times, the alarm will sound and passcode entry will be denied for 5 minute.

You know how an authenticator works? Yea just like that. The app installed on the phone reveals the code when requested.

So technically, when youre in USA, the pin can be requested on your phone with the app, and copy the code to the person.

WiFi is unecessary.

Be warned though, sometimes the app login will expire out after certain period of time. After expire, you need to relogin to the app while physically nearby the door lock.