HLK-RM04 RM04 UART Serial To WiFi Module Ethernet Switch WiFi Board 1, serial to WIFI module, serial to Ethernet module, Ethernet to WIFI multi-function WIFI module, serial server module, make your serial device easy to network, full transparent two-way data transmission, to ensure the highest ease of use and compatibility 2. Module integrated 10/100M adaptive Ethernet interface, the highest baud rate of serial communication is up to 230.4Kbps 4. Reliable system core for security and long-running system applications 5. Small size: 40*29 (smaller than one-third of the credit card) 6. Working temperature: Industrial grade: -25~75C. 7. Built-in 360M MIPS CPU, 16M RAM and 4M FLASH and wireless baseband and RF front-end and a variety of peripheral buses 8. support IEEE 802.11 b/g/n, support transparent protocol data transmission mode 9. Support most WIFI encryption methods and algorithms, WEP/WAP-PSK/WAP2-PSK/WAPI, encryption type WEP64/WEP128/TKIP/AES 10. Provide AT+ instruction set configuration, provide friendly web configuration page, configure through webpage 11. Optional built-in onboard or external antenna 12. Support wireless work in AP mode and node mode, real hardware AP, support all WIFI connections such as iPhone and Android, support AP and station simultaneous online functions 13. Optional TCP Server/TCP Client/UDP working mode, support network protocol: TCP/UDP/ARP/ICMP/HTTP/DNS/DHCP 14. Supports DHCP to automatically obtain IP, and supports IP allocation for slave devices when working in AP mode. 15, the serial port speed is adjustable, the maximum support 230400 Serial to network: High transmission rate: 230400bps TCP connection: large connections >20 UDP connection: large connection number >20 Serial port baud rate: 50~230400bps Other parameters: Environmental standard Working temperature: -20-60 C Working humidity: 10%-90% RH (non-condensing) Storage temperature: -40-80 C Storage humidity: 5%-90% RH (non-condensing) Other performance Band bandwidth optional: 20MHz, 40MHz, automatic _x000D_