Hi @edtolputt. No, it is not possible for your Indoor Cam to trigger the siren on your Base Station. It is possible to have it work the other way around, so that if your Alarm System is triggered, the siren on your Camera will also trigger. To do so follow these steps: 1. Open your Ring App. 2. Open the side menu by tapping the three-lined icon in the upper-left corner of the screen. 3. Tap **Devices.** 4. Tap **Alarm Base Station**. 5. Tap Base Station or Alarm Pro Base Station. 6. Tap **Linked Devices**. 7. Press Alarm Sounding. 8. Select the the symbol for the siren on the Cameras you want alarming when the Alarm System is triggered.

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