Hey @kensympson. We do in fact have a manual for the keypad which you can view to learn more about here at anytime.
To answer your questions:
- The “X” key is apart of the panic feature on the keypad and to clear out any digits pressed if you entered one incorrectly.
- The check is used as apart of the panic feature as well and is pressed to bypass any sensors when prompted.
- and 4. You can hit the “X” at anytime to clear the whole string of numbers entered. If you need to edit access codes, you will do that through the Ring app > Settings > Users.
In addition, here is an FAQ on our Ring Help Center Article here that you may find useful! Thank you @Eagle328 for the additional links and information!