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HLK-7628N MT7628N
MINI WIFI module/SerialToWiFi HLK-M30
Retail Price:$7.00
Wholesale Price:$6.00


Note: This module is very small in size.    

Down Files From Here:

f you want startkit press here:



1 Introduction:

Serial port: one RS232 female head( with 9 holes)

M30 wifi module: TTL 3.3V

Power supply:5V(1A)

The startkit include four parts: the test board, the M30 module, the power supply and the antenna.

 HLK-M30 is a new low-cost embedded UART-ETH-WIFI module (serial port - Wireless network) developed by Shenzhen Hi-Link Electronic Technology co., Ltd
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,  wireless network (wifi) interface between the conversions.
Through the HLK-M30module, 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.



This module is with lower power 3.3V 100mA, start time only need 1 second. Smart size, only 14.1*16.5*2.25mm, A key configuration ,easier secondary development.



Support 2 types of work mode: WiFi STA/AP


2 Summarize


2.1Technical Specifications


Table2-1Technical Specifications 


Basic Parameters
Wireless standard IEEE 802.11n、IEEE 802.11g、IEEE 802.11b
Wireless transmission rate 11n: maximum up to 150Mbps
11g: maximum up to 54Mbps
11b: maximum up to 11Mbps
Tracks number  1-14
Frequency range 2.4-2.4835G
Emission power 14-18 DBM
Interface Serial、GPIO
Antenna type External   Antenna
Transmission Range 100-300m according the test environment
Functional Parameters
WIFI work mode AP/Sta
Wireless security Wireless security  function
64/128/152 bit WEP encryption
WPA-PSK/WPA2-PSK,WPA/WPA2 security mechanism
Serial to Network
transmission rate
TCP connection Max connection number: 4
UDP Connection Max connection number :4
Other Parameters
Status indicator Indicate Status
Environmental standard Operating temperature:-20-70℃
Operating humidity :10%-90%RH(noncondensing)
Storage temperature:-40-80℃
Storage humidity :5%-90%RH(noncondensing)
Bandwidth Frequency bandwidth optional:20MHz、40MHz,Automatic

HLK-M30 Application and Mechanical Dimensions is shown in the following picture


Basic way of networking:

The Pin of this product as shown above is defined as follows





Packaging & Shipping


Packaging Details

Unit Type:

lot (1 pieces/lot)

Package Weight:


Package Size:

10cm x 8cm x 6cm (3.94in x 3.15in x 2.36in)




Company Information




1.Do you support OEM and ODM?

---Yes,dear,we are manuafacture.

2.Do you support user manual and other document?How about the tech support?

-Yes,we have a professional R&D team,we provide you materias as much as we can

3.Is sample avalible?What is the MQQ?

-Yes,dear,we support the sample,but you need to pay the sample fee and deliver charge.

4.What will the Price be when bulk order is needed?

--Our Price varies with your quantity,the more you ordered,the less the price is.

5.What is the lead time?

--Within 3K,2days.

6.How can I find you if we have questions?

-You can send mail to me,or add my skype:hlktech 



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