The Ring Alarm system is primarily designed to work with Wi-Fi connectivity. However, it does have a cellular backup feature that allows it to function even if the Wi-Fi connection is lost or unavailable. The cellular backup feature is available with the Ring Protect Plus plan, which includes cellular backup and 24/7 professional monitoring.  If your Wi-Fi connection goes down or is disrupted, the Ring Alarm system can automatically switch to cellular backup mode, which uses a cellular connection to continue monitoring your home and sending alerts to your phone.