Pair and Music Selecting Steps:
Plug in the chime into wall outlet to get power, Push the Previous or Next button on chime to select music , after select your music, push the volume button on chime for 5s, it will flash with blue LED indicating go into pair mode, then push the button of video doorbell to pair and confirm this music, it is done. This music is set as your default.
Description:Specifications:
UK plug, Color: white.

Ringtones: Music (52 types)
Power supply voltage: 110-220
Working frequency: 433Mhz
Volume: up to 100dB
Scope of application: 
Furniture smart wifi doorbell
match well with KuDiff smart Video doorbell and other Wifi dorrbell with App : Xsh Cam, UBell, Anyhome, Tosee.
Note: Not compatible with IT smart wifi doorbell

--Package:
1* Ding dong chime of smart video doorbell