Why does the Wi-Fi light suddenly come on?

1. First confirm whether the mains power supply line has a power failure or a light without a power-off memory function. After the App is shut down, if the power is cut off, the light will definitely be on. 2. Generally, it is caused by the phenomenon of pits in the module power supply VCC. Check the power supply VCC waveform and optimize the internal module power supply circuit of the drive power supply. The above two points are no problem. Please submit a work order and provide the device ID to the Tuya technicians for analysis, or directly provide a bad prototype.