Connectors: HE14, micro USB. Function: development tool . Note: Bluetooth Low Energy, IEEE 802.11b/g/n/e/i. Note: Starter kit WiFi, interface GPIO, I2C, I2S, SPI, UART, WIFI. Note: encryption AES, WPA, WPA2-PSK, WPS. Note: 4Mb SRAM memory, 4Mb Flash memory. Dimensions: 54.4x27.9mm. Operating temperature: -40...+85°C