BRAND: Communica

WI04 Ethernet Wifi Serial UART Module 2.4GHz 802.11b/g/n Compatible

Wifi Module


The WI04 module provides designers with a ready made component that provides a fully integrated solution for applications, using the IEEE802.11 standard in the 2.4-2.5GHz ISM frequency band, including802.11b/g/n and also provides IEEE802.3, can be quickly and easily included in product designs. The modules integrate all of the RF components required, no need to perform expensive RF design and test. Products can be designed by simply connecting sensors and switches to the module IO pins or uart interface. The modules use ralink’s chip Wireless MCU, allowing designers to make use of the serial interface to connect with their device Hence, this module allows designers to bring wireless applications to market in the minimum time with significantly reduced development effort and cost.

This product is an embedded module based on the universal serial interface network standard,built-in TCP / IP protocol stack, enabling the user serial port, Ethernet, wireless network (wifi) interface between the conversions. Through the WI04 module, the traditional serial devices do not need to change any configuration; data can be transmitted through the Internet network. Provide a quick solution for the user’s serial devices to transfer data via Ethernet Also the Wi04 module have FCC modular approvals and is compliant with EU regulations.



  • WiFi Router module solutions
  • Ready to use in products
  • Minimises product development time
  • No RF test required for systems
  • Compliant with CE and FCC
  • Serial to Wifi ; Serial to Net ; Both by one module


  • WiFi Led Control
  • WiFi Power Switch
  • Home and Commercial building automation
  • OBDII WiFi Diagnose
  • RFID Data Transfer
  • Toys and gaming peripherals
  • Industrial systems
  • Telemetry
  • Remote Control


  • 2.4GHz 802.11b/g/n,compatible
  • Support IEEE 802.3 IEEE 802.3u
  • WiFi Client/AP/Router Mode
  • Support wps/wds
  • The range of baudrate : 1200~500000bps
  • Support transparent transmission mode
  • Support multiple security authenti-cation
  • Mechanisms : WEP64/WEP128/ TKIP/ AES / WEP/WPA-PSK/WPA2-PSK
  • Support wireless roam
  • Support multiple network protocols : PPPOE/TCP/UDP/DDDNS /DHCP/DNS/HTTP/Firewre
  • Support AT+ instruction set
  • Support two config methods : Serial/WEB
  • Dimensions : 29x40x8.8mm
  • Lead-free and RoHS compliant


Additional Information

Keywords Ethernet, wifi, Serial, UART
Device Module
Type Wifi
Highlights Wifi | Ethernet | Serial UART