Features: brand new and high quality Adopt dual-core Xtensa®32-bit LX6 MCU. Integrated SPI flash 3.32Mbit SRAM 520KB. Support TCP Server, TCP Client, UDP Server, UDP Client working mode. Support the four data ports of serial port, wif. Ethernet and Bluetooth-compatible to be combined in pairs, and the data is transparently transmitted. Support to connect to the network through wired network or wifi to upgrade the firmware. Support wifi to connect to the Internet or LAN through a router, establish a TCP/UDP connection, and access the user's designated server. Specifications: Support wired network access. Support user secondary development. Industrial grade operating temperature range: -40-+85. Serial port baud rate: 80-5000000. Network protocol: IPv4, TCP/UDP. Software encryption: for AES/RSA/ECC/SHA Package Includes: 1 x Ethernet Module. note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!