HLK RM04 Embedded WiFi to Serial Port MCU for Arduino Uart Wireless Transparent Transmission Module

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  • This product is based on the universal serial interface up to the standard of network embedded module, built-in TCP/IP protocol stack, can realize the user aserial port, Ethernet and wireless network (WIFI) any transparent conversion between the three interfaces.

  • Through the HLK-RM04 module, traditional serial port devices in don't need to changeany configuration, can through the Internet network transmit their own data. Aserial port equipment for users to transmit data through Ethernet provides quick resolution


  • Name: RM04

  • A serial port turn WIFI module, a serial port turn Ethernet module, Ethernet switch WIFI multi-function WIFI module, aserial port server module, make it easy for your serial port device connected to the Internet, transparent two-way data transmission, to ensure the highest limit of ease of use and compatibility

  • 10/100 m adaptive Ethernet interface module integration, the serial communication baud rate up to 230.4 Kbps

  • By using the world's top network chip suppliers ralink ralink solution, raw materials adopt TDK / / murata, big brands, stable and reliable basis

  • The system core is suitable for the security of the reliable and long-term running system application

  • Size: 40 * (29) smaller than credit carda third

  • Working temperature: industrial-grade:25 ~ 75 ° C.

  • The built-in 360 m of MIPS CPU, 16 MBRAM and 4 m FLASH and wireless base band and rf front end and a variety of peripheral bus

  • Through CE and FCC certification,support the IEEE 802.11 b/g/n, support transparent protocol data transmission mode

  • Most support WIFI encryption methods and algorithms, WEP/WAP wpa2-psk/WAP2 wpa2-psk/WAPI, WEP64 WEP128 / TKIP/AESencryption type

  • AT + instruction set configuration,provides the friendly Web configuration page, through a Web configuration

  • The optional built-in on board or external antenna

  • Support wireless work in AP model and node (Station), the real hardware AP, support iphone and android systems all WIFI connection, support functions of AP and Station online at the same time

  • Optional TCP Server/TCP Client/UDP work mode, support network protocol: TCP/UDP/ARP, ICMP/HTTP/DNS/DHCP

  • Support DHCP automatically obtain IP,support work in AP mode to assign IP from the device

  • A serial port speed is adjustable, the highest support 230400

Shipping List

  • RM04: 1 pcs


  • This item just includes one pcs of WiFi module RM04




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