$ 32.00 $ 32.00

Product Description


  • 2*4 pins of Interface: HDR254M-2X4
  • The range of baud rate: 1200~ 115200bps
  • RTS/CTS hardware flow control
  • Single 3.3V power supply


  • Support IEEE802.11b/g wireless standards
  • Support the range of frequency: 2.412~2.484 GHz
  • Support two types of wireless networks: Ad hoc and Infrastructure
  • Support multiple security authentication mechanisms: WEP64/WEP128/TKIP/CCMP(AES)WEP/WPA-PSK/WPA2-PSK
  • Support quick networking
  • Support wireless roam


  • Support multiple network protocols: TCP/UDP/ICMP/DHCP/DNS/HTTP
  • Support two types of work modes: auto and command
  • Support transparent transmission mode
  • Support AT+ instruction set
  • Support a variety of parameters configuration methods: serial/WEB server/wireless connection Application
  • The intelligent bus network, such as wireless credit card machine
  • Small financial payment network, such as wireless POS machine
  • Industrial equipment networking, such as wireless sensor things


  1. First, you should Connect the wifi module with PC via  USB To the TTL Pl2303 module make sure you choose 3.3V on the USB To TTL board.  
  2. Start WiFi software to find the device. Input all the information needed to configure the wifi module.


3. If successful, you can get the following result: 

     4. Enter the SSID, Encry Mode, Key Type and Key Parameters,Those parameters much match your wireless router.

       Also, you have to enter your NetType parameter. IF your wireless router supports DHCP Usually most routers support it. you can choose ” Automatic IP”. Or else you have to enter IP and Gateway Parameters

      Don’t select Auto Work mode

     Click Modify then Rest Now to reset the module.







     Close the software and restart it again  Search and connect as descripted above. Choose the FuncTest in the top menu, and click connect

    5. Connect this module with Arduino by using Wifi Shield Arduino Compatible With Microchip

After the configuration on the wifi module, upload the following code to Arduino:

void setup()




void loop()


boolean currentLineIsBlank = true;


if (Serial.available()) {

char c = Serial.read();

// if you’ve gotten to the end of the line (received a newline

// character) and the line is blank, the http request has ended,

// so you can send a reply

if (c == ‘n’ && currentLineIsBlank) {

// send the webpage

Serial.println(“HTTP/1.1 200 OKrnContent-Type: text/htmlrnrn<center><h1>Hello World!! I am WiFi WebServer!!!</h1></center>”);



if (c == ‘n’) {

// you’re starting a new line

currentLineIsBlank = true;


else if (c != ‘r’) {

// you’ve gotten a character on the current line

currentLineIsBlank = false;





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