CACAZI Waterproof Wireless Doorbell [2 BUTTONS - 2 RECEIVERS] -Black JUMBO making it a must-have for

CACAZI Waterproof Wireless Doorbell [2 BUTTONS - 2 RECEIVERS] -Black JUMBO making it a must-have forOperation guide: 1. How to modify and lock music? Press and hold the volume button of the receiver before plugging in the power socket. Plug in the power socket until the light of the receiver lights up, release the volume button, press the music button to adjust to the favorite music ringtone, press and hold the volume button again until the light is on, press the transmitter twice immediately and the music is locked successfully. 2. How to pair

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