Uart serial port to wifi module with external antenna RDA5981 chip

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Company Information

Shenzhen Hi-Link Electronic Co., Ltd.

CN Manufacturer, Trading Company, Distributor/Wholesaler
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US$ 10,000+
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Quick Details

Port: Shenzhen
Payment Terms: T/T,palpal
Supply Ability: 30000 Piece/Pieces per Month
Warranty: 1year
Chipset: RDA5981
Place of Origin: Guangdong China
Channel: 1-11
Operating mode: STA/AP
Dimensions: 16*25*3mm
Transmit power: 15-20dBm
Model Number: HLK-M50
Brand Name: Hi-Link
Function: serial to wifi
Frequency: 2.412~2.4835GHz
Wireless standard: 802.11b/g/n
Application: consumble electronics, security, led, smart home
Interface: serial port, USB, GPIO
Antenna: external
Packaging Detail: 16*23*1mm/pcs
Product Description

  HLK-M50 is a cost-effective embedded serial-WiFi transparent transmission module developed and produced by Hi-Link Electronics.

  This product is an embedded module based on a universal serial interface and conforms to network standards. Built-in TCP/IP protocol stack, which can convert between user serial port and wireless network (WIFI) interface, enabling transparent transmission of data between serial port and network TCP/UDP connection.


1. Low power consumption, quick start, network connect quickly.

2. Pefect support 802.11 b/g/n. Support STA/AP mode.

3. No driver need, user only need to use it as a serial port.

4. Support TCP sever/ TCP client/ UDP sever/ UDP client.

5.Support serial at command

6. 150Mbps transmission rate

7. Support various interfaces. such as USB host, DEVICE 20 HS, Micro SD(SDMMC), UART, I2C, I2C, PMW, SPI, ect

Network parameter
Network protocol
Wireless standard: IEEE 802.11n、IEEE 802.11g、IEEE 802.11b
Wireless transmission rate
11n: up to 150Mbps
11g: up to 54Mbps
11b: up to 11Mbps
Frequency range
Transmit power
15~20 dBm
1 serial port, 1 USB port (host), GPIO
Antenna types
On board antenna
Function parameters
WIFI operating mode

Wireless security
64/128/152 bit WEP encryption
WEP, WPA, WPA2 (CCMP, TKIP) Security Mechanism
(Only WPA2-CCMP is supported in AP mode.)
Configuration method
Serial AT command
Serial to network
Network connection type
TCP Server/TCP Client/ UDP Server/ UDP Client
Max No. of connections under TCP Server
Serial port baud rate
Other parameters
Status Indicator
1 status indication output

Environment standard
Working temperature: -20~70℃
Working humidity: 10%~90%RH (Non-condensing)
Storage temperature: -40~80℃
Storage humidity: 5%~90%RH (Non-condensing)
Other performance
Frequency bandwidth: 20MHz, 40MHz, automatic
Typecal Application

The test board 

It supports wireless OTA, can be second developed. 

Applied circuits

Various interface can be fit well

Related Products

MT7628N/7688A HLK-RM04N

           RTL8711 HLK-RL05


Our Company

Hi-Link Electronic co.,Ltd founded in September.2009, is a manufacturer intgrates research and develeopment, production and sales WIFI module/Power module of smart home of IOT. Our products are not only uniquely designed, but also made with find workmanship from durable materials. We will always look for the good quality products with the reasonable prices.

Packing & Delivery


1. WORLDWIDE SHIPPING. (Except some countries and APO/FPO)
2. Orders processed timely after the payment verification.
3. If you have not received your shipment within 30 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply.
4. Due to stock status and time differences, we will choose to ship your item from our first available warehouse for fast delivery



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