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Structurally, the Wi-Fi module belongs to the low-voltage, low-voltage section, and its operating voltage is usually much lower than the AC mains voltage. Therefore, as long as the design complies with electrical codes, the Wi-Fi module itself does not directly increase the risk of electric shock.

• Ordinary light dimmer switches are not suitable for direct use with fans. • Fan dimmer wall switches are control devices specifically designed for fans. In other words, not all dimmer switches can be used with fans; only true fan dimmer wall switches are suitable for fan control.

Under normal circumstances: The USB interface itself does not pose a risk of electric shock. The real concern is not the USB output end, but rather: Whether the high-voltage to low-voltage conversion process inside the wall socket is safe and reliable.

Strictly speaking, a Wi-Fi Wall Switch is an electrical control device that integrates a wireless network communication module into a traditional wall switch. A Wi-Fi Wall Switch is not simply a "button with network functionality," but rather an electrical control terminal with network connectivity.

"DP" is an abbreviation for Double Pole, commonly referred to in Chinese as: Double-pole wall switch This means: • When the wall switch operates, • it disconnects both wires simultaneously • typically the live wire and the neutral wire This is the fundamental difference between a DP wall switch and a regular single-pole (SP) wall switch.

In some standard systems, 13A plugs are equipped with internal fuses (such as 3A, 5A, 13A). If: • The appliance does attempt to draw more than 13A of current under certain conditions • The fuse inside the plug may blow • Causing the appliance to malfunction