Wireless Doorbell with Waterproof case Door Bell 1 Button 1/2/3 Receiver IP55 300M Range 5 Volume 38 Tones Door Chime

Note: Each doorbell model purchased will only receive a waterproof doorbell shell as a gift！How to pair signals:1. Pairing method: press and hold the volume button on the receiver for 5 seconds,2. Press the button immediately, the signal is paired successfullyHow to set up music1. First press and hold the music button to select your favorite music.2. Then press and hold the volume button on the receiver for 3 seconds.3. Then immediately press the button, the music selection is successful.Do not place the button on the iron door to avoid shielding the signal. We recommend placing the button next to the iron door.