This is HLK-RM04 UART to Serial Wifi Ethernet Wifi Module. HLK-RM04 A new low cost embedded UART-ETH-WIFI module (serial port-Ethernet-Wireless network). This product is an embedded module based on the universal serial interface network standard, the built-in TCP / IP protocol stack allows the user, serial port, Ethernet, wireless network (wifi) conversions between the interface. HLK-RM04 through the module, traditional serial devices do not need to change any configuration; The data can be transmitted through the Internet network. Users provide a quick solution for serial devices to transfer data over Ethernet. Here is the link of Wireless module/Serial to RJ45/Serial To Wifi HLK-RMO4 Features Serial to WIFI, Ethernet, Ethernet to Wifi multifunction Wifi module, transparent dual-way data transmission Integrated 10/100M ethernet port, Max. baud ratio up to 230.4kbps Adopts Ralink program, high-quality material Reliable system core suit safety and long-run system application Working temperature: industrial class -25~75°C Built-in 360M MIPS CUP, 16M RAM, 4M FLASH, wireless baseband, RF front-end, and multi-peripheral bus Support IEEE 802.11 b/g/n, transparent protocol data transmission mode Support WIFI encryption and algorithm, WEP / WAP-PSK / WAP2-PSK / WAPI，encryption type WEP64 / WEP128 / TKIP / AES Offer AT instruction set, offer friendly web configuration page Built-in antenna or external antenna Support AP and Station mode, AP support iPhone and android connect with WIFI, support AT, Station online simultaneously TCP server/TCP Client/UDP work mode, support network protocol: TCP / UDP / ARP / ICMP / HTTP / DNS / DHCP Support DHCP auto gain IP, support IP distribution at AP Mode Serial speed ratio adjustable up to 320400
