Arptur D9 Series - How To Change Programs; Program Switching

9
How To Change Programs
Long press the VC button on device for 2s to change
programs. Programs change in cycle, such as 1-2-3-1-2-3
• P1: quiet
• P2: noise reduction
• P3: deep noise reduction
you will hear the beep(s).
Tips: Devices will remember the setting that used last time.
(Press and hold for 2 s)