If Xiaomi Smart Doorbell 3 and the indoor chime cannot be paired successfully, please refer to the following steps:
1. After the chime is powered on, it will ring the default bell once by default. If it does not ring, check whether the power supply of the socket is normal; if the power supply is normal, the chime is abnormal;
2. Press and hold the chime pairing button for 3 seconds according to the prompt, the receiver will make a "beep" sound, and the doorbell will enter the pairing mode. The pairing mode lasts for 2 minutes, and the chime exits the pairing mode after two beeps;
3. The network connected to the doorbell should be normal when pairing;
4. The best distance for pairing is within 2 meters from the doorbell and the chime (do not install the doorbell on the door for pairing).