The following instructions apply to the GardePro Baby Monitor B3.
1) If you have multiple cameras, you must select your camera first. You can press Fn and Down to enter "camera switch", press Right or Left to shift to the camera you need to adjust, then you can press OK to select it.
If the "Camera Switch" has been set to "Patrol", You can wait for its shift to the camera you need, then go on to operate as below.
2) Press Fn, then press UP to enter the interface of lullabies.
3) In the lullabies interface you can press "+" or "-" to turn the volume up or down.
If your problem still cannot be solved, please contact us.