Operation steps: Step 1: Insert the 4-wire 4-pin plug into the 4-hole socket of the indoor unit of the air conditioner. (There is a reserved 4-pin socket on the front panel of the indoor unit. Ensure the power is turned off before connecting the module.) Step 2: Use the QR code on the mobile phone module to download the APP. Step 3: Open the APP after successful download and click to configure access. Step 4: Register a name and click Add WiFi Smart Control Module. Step 5: Add a device by scanning the barcode on the indoor unit and follow the pop-up interface prompts to operate the air conditioner network setup. (Note: The barcode on the module may not be usable.) Use environment: The smart air conditioner must be connected to a power supply. The air conditioner can connect to the smart service through a smartphone and a wireless router. Most smart air conditioner panels are marked with a WiFi logo. Alternatively, open the panel to check for a 4-hole or 4-pin connector inside. If there is no reserved 4-hole or 4-pin connector, the air conditioner is not compatible. Color: As shown Material: Plastic Package Contents: 1 x Air conditioner WIFI intelligent module (A) Note: Light reflection and differences in display screens may cause slight variations in color. Measurement may vary by +/- 1-3 cm.