Wireless DoorBell Waterproof LED Light Button Self-Powered No-Battery Home Intelligent Cordless Door Bell 150 Meters Rrange 45 Ringtones DoorBell

How to pair signals?. Press and hold the volume button on the receiver for about 5 seconds, release the volume button, then press the button immediately, the signal is successfully paired. 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 When the light is on, press the transmitter twice immediately and the music is locked successfully

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