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. 1 x For Raspberry Pi Pico Kit Item Type: For Raspberry Pi Pico KitMaterial: PCBProduct Size: Approx. 58 x 25mm / 22.8 x 9.8inCommunication Interface: UARTSerial Port Baud Rate: 115200bpsWiFi Standard: IEEE 802.11b/g/nFrequency Range: 2400~ 2483.5MHzWiFi Working Mode: WiFi STA, WiFi AP, WiFI STA+APAntenna: Onboard PCB AntennaWorking Voltage: 3.3VWorking Temperature: -40℃~85℃