When it's time to pair the keypad, the Ring app will have you create a four-digit PIN for arming and disarming the system. If you choose to have professional monitoring, you'll need to also come up with a verbal password to help identify you in case you have to talk to a dispatcher. As a reviewer — and a person who has tripped countless alarms in the last few months — I also appreciate that there's a seven-day trial period before professional monitoring becomes active, so you can take time to set up the system without worrying about false alarms. It also gives you time to register the alarm so that you do not incur any fees.
I own and use 4 Ring devices at my primary and secondary home. Until last night, I have been very pleased with the product. Last night, we had a heavy storm at our second home and the electricity was off for a period of time. My Nest devices automatically reconnected to my wifi as soon as the power was reestablished; not so with the Ring devices. Ring required my to physically be close to the devices with my iPhone in hand to reestablish the connection. This is a serious flaw for users like myself and one that Ring needs to correct if I am going to continue using their product. The electricity, and thus the wifi, at our mountain home loses power several times a year. I don't want to travel 700 miles just to reconnect a Ring device or two.