Operation steps: Step 1: Insert the 4-wire 4-pin plug/connection 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, which must be turned off plugging in the module) : Use the QR code on the mobile phone code module to download the APP. Step 3: Open the APP after the download is successful, and click to configure access. Step 4: Register a name, click Add WiFi Smart Control Module. Step 5: Adding a device is to the barcode on the indoor unit and press the pop-up interface prompt to operate the air conditioner distribution network; this step cannot be wrong (many the barcode on the module / useless) Use environment: The smart air conditioner needs to be connected to the power supply, and the air conditioner can be connected to the smart service through the cooperation of the smart phone and the wireless router Most of the smart air conditioner panels are marked with the WiFi logo, Or open the panel to see if there is a 4-hole or 4-pin connector inside, If there is no reserved 4-hole or 4-pin connector, it is a non-smart air conditioner/cannot be used. color:As shown Material:plastic Package Contents: 1 x Air conditioner WIFI intelligent module(B) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.