Devo F7 beeping whilst I fly.

I just got the Walkera QR-X350 Pro with the Devo F7 with 2d Gimbal and ilook camera. When I tested it inside my house by hovering it never beeped. When I hover outside in my back yard the Devo F7 randomly beeps. There is nothing on the display that indicates what the beep means. The quad seems to respond good but the beeping is concerning to me. If you know what this means please let me know. Thank you!

Might be one of the timers, or the battery is low.

wild guess.. Devo F7 have this option to beep when you raise the throttle over 50% or every time you pass 0 on the aux potentiometer..
go to System menu>Buzzer>set Throttle stick and Knob Midpoint>Inhabit
maybe you didn't hear the beeps inside the house because you didn't raised the throttle stick above 50%
let us know if this worked for you