Can you set up Alexa to arm and disarm ring if you just have motion cameras?

I have a Ring doorbell and Spot Camera. The Ring app now offers Disarm, Arm and Home modes. I can set up my cameras to turn off motion sensing in Disarm mode, which is a great feature for one click disabling.I am trying to integrate with Alexa to be able to set system states, however, it is not working. Is Alexa system state integration only available if I have the Ring alarm system? If it is available without, where can I find instructions to set it up?Thanks