VTech SN5127

88
Additional devices
Set chime tone
1
  
Press MENU when the handset is not in use.
Scroll to Set device, and
then press SELECT.
1
  
Settings
>Set device
Scroll to Doorbell, and
then press SELECT.
2
 
Check signal
>Doorbell
Audio doorbell
(Model SN7021 , purchased separately)