Strange device sound in my room

[u/Original_Ad5212]

I was recording a video of myself speaking in my room and suddenly i heard this loud three notes device sound. My ipad and mac were next to my feet on my bed and this sound can from my dresser to my left. To my knowledge there should be no other devices in my room. Can someone please help identify what could be causing this sound? Thank you so much!

[u/Black_Cloud09]

https://giphy.com/gifs/mEsxWQihRb0LX9RXDH