If there are abnormal sounds when checking the real-time surveillance on the Xiaomi Smart Camera C300 Dual, please refer to the following details:
1. The volume of the real-time surveillance is turned off by default in the Mi Home/Xiaomi Home APP. You can turn on the volume button in the video interface. If the volume is low, you can turn up the volume of the phone;
2. If there is noise in the real-time surveillance, please keep the phone away from the camera and avoid placing the camera next to electronic devices such as refrigerators and microwave ovens;
3. If your device is placed high or the lens is facing down, the microphone will be buried in the shell, forming an echo when receiving the sound of the speaker. At this time, you need to move the device microphone out of the shell;
4. Check if the Mi Home/Xiaomi Home APP has been permitted to use the phone's microphone (recording). If not, turn on the relevant permission in the phone's settings.