Features: 1.[AT Order] This product is a for Raspberry Pi Pico expansion board with WiFi function, universal serial port AT order control, supports TCP/UDP protocol communication, and can easily realize networking through WiFi. It can be used with for Raspberry Pi Pico to realize IoT communication applications. 2.[Interface Design] Based on the for Raspberry Pi Pico interface design, suitable for Raspberry Pi Pico series motherboards, solder headers, and can be directly connected to the Pico motherboard. 3.[3 WiFi Working Modes] Support STA, AP, STA+AP three WiFi working modes, built in LWP protocol heap, support TCP/UDP communication. UART interface communication, universal serial AT order control, can quickly get started. 4.[ESP8266 Module] WiFi expansion board uses ESP8266 module, four layer board technology, enhanced impedance matching, more strong anti interference performance, better and more stable signal. 5.[2 Function Buttons] There are 2 function buttons on board, which is convenient for users to update various AT firmware through for Raspberry Pi Pico. specification:Item Type: For Raspberry Pi Pico Kit Material: PCB Product Size: Approx. 58 x 25mm / 22.8 x 9.8in Communication Interface: UART Serial Port Baud Rate: 115200bps WiFi Standard: IEEE 802.11b/g/n Frequency Range: 2400~2483.5MHz WiFi Working Mode: WiFi STA, WiFi AP, WiFI STA+AP Antenna: Onboard PCB Antenna Working Voltage: 3.3V Working Temperature: -40~85 PackageList:1 x ForRaspberryPiPicoKit NoteThis product does not contain for Raspberry PI Pico, please purchase separately if necessary