Product Name:HLK-RM08K Serial WIFI Module / Wireless Routing Module

Product Category:WIFI Products

Application Scenario:Smart LED Smart Bus Network Smart Home / Household Appliance Instrumentation Healthcare Industrial Automation


Compliant with IEEE802.11b / g / n standards

SDIO2.0 or SPI interface

Working voltage: DC 3.0V ~ 3.6V

Wi-Fi related features

Support 802.11b / g / n and compatible with WLAN

Introduction :


     HLK-RM08K is a new low-cost embedded UART-ETH-WIFI module (serial port - Ethernet - Wireless network) developed by Shenzhen Hi-Link  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, Ethernet, wireless network (wifi) interface between the conversions.

Through the HLK-RM08K 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.

HLK-RM08K Serial wifi module/ two-serial port UART WIFI module MT7688K


2           Summarize

2.1        Technical Specifications

Table2-1Technical Specifications   

Network standard

wireless:IEEE 802.11n,IEEE 802.11g,IEEE 802.11b

wired:IEEE 802.3,IEEE 802.3u

Wireless transmission rate

11n: maximum up to 150Mbps
11g: maximum up to 54Mbps
11b: maximum up to 11Mbps

Tracks number


Frequency range


Emission power



1 WAN,4 LAN, 2 serial port


Antenna type

External Antenna(IPEX)

Functional Parameters

WIFI work mode


WDS Function

Support WDS wireless bridge connection

Wireless security

Wireless MAC address filtering

Wireless security function switch

64/128/152 bit WEP encryption

WPA-PSK/WPA2-PSK,WPA/WPA2 security mechanism

Network management

Remote Web management

Configuration file import and export

WEB software upgrade

  Serial  to Ethernet

Maximum transmission rate


TCP connection

Max connection number>20

UDP connection

Max connection number>20

  Serial  baud rate

1200~2500000bps (2500000/n  1<=n<=65535)

Other Parameters

Status indicator

Status indicator

Environmental standard

Operating temperature:-20-55 Centigrade

Operating humidity:10%-90%RH(noncondensing)

Storage temperature:-40-80 Centigrade

Storage humidity:5%-90%RH(noncondensing)

Additional properties

Frequency bandwidth optional:20MHz,40MHz,Automatic



2.2        Hardware Explanation

2.2.1        Mechanical Dimensions


HLK-RM08K Mechanical Dimensions is shown in the following picture:

HLK-RM08K Serial wifi module/ two-serial port UART WIFI module MT7688K



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