Can this work with Just the ring app. Having a paid plan with more than 2 cameras. Can this just send notifications to my phone as ring door bell does or It works with only professional monitoring? Let me know

Hi Sammy. Thank you for reaching out to us with your question.The Ring Alarm Flood and Freeze Sensor requires a Ring Alarm or Ring Alarm Pro security kit. Ring Alarm and all Ring Alarm accessories require a subscription for in-app features and digital notifications, including but not limited to: digital arming / disarming and integration with other Ring, Echo, Alexa, and third party products. Subscription sold separately. You can learn more here: https://ring.com/support/products/accessories/flood-and-freeze?page=1. We invite you to reach out to our community if any additional information is needed regarding your question. The Ring Community is our first peer-to-peer community forum, giving our customers the ability to help one another by sharing their feedback and experiences with each other. You can find it here: https://community.ring.com/. Thank you, Amilia from Ring.