Adafruit WiFi / 802.11 Development Tools Huzzah ESP8266 Breakout (1 Piece) Price For: Pack of 1 Manufacturer: Adafruit Industries Product Category: WiFi / 802.11 Development Tools RoHS: Product: Breakout Boards Tool Is For Evaluation Of: ESP8266 Protocol Supported: 802.11 b/g/n Frequency: 2.4 GHz Operating Supply Voltage: 3.3 V Antenna Connector Type: Internal Brand: Adafruit Description/Function: Breakout board for ESP8266 Dimensions: 38 mm x 25 mm x 5 mm Interface Type: I2C/SPI, UART Packaging: Bulk Tradename: