Multiple cameras on one basic account

Hi, I have a Ring security cam set up and paying for the subscription £2.50 a month, I want to add a doorbell but only want to use the free abilitys on that, without recording, but I want to have both attached to the same account, controlled all from my phone, I don't want to pay more than double for a second device, so can it be used with the basic features on the same account or will automatically try and charge me more? I paid ahead for a year so not sure how it would so this anyway. Thanks James