HLK-RM08K Serial wifi module two-serial port UART WIFI module MT7688K IOT solution with development kit

Feedback Ratings
  • 1-99 Pieces
    US $14.00
  • 100-999 Pieces
    US $13.50
  • >=1000 Pieces
    US $12.00
- + Pieces available
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Shipping fee:
Depends on the order quantity.
Lead Time:
5 day(s) after payment received
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Quick Details
Model Number:
Logic ICs
Brand Name:
Place of Origin:
Guangdong, China (Mainland)
WiFi working mode:
AP, Client, Repeater, Bridge, Router
wifi module:
TTL 3.3V
Ethernet port:
five port
Main Chipset:
Uart port:
Two RS232 ports
Antenna type:
Internal/built-in antenna
Dissipation Power:
5V 150mA
Wireless Control

Packaging & Delivery

Selling Units:
Single item
Single package size: 
20X5X5 cm
Single gross weight:
0.2 kg
Package Type:
1.Standard exported package . 2.Packing list: one HLK-RM08K module . one HLK-RM08K test board one power adapter one 2dB antenna
Lead Time :
Quantity(Piece) 1 - 1000 >1000
Est. Time(day) 5 To be negotiated

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.



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:


 If you have any question please email to us or add skype:c-alicekuang. I will reply to you as soon as possbile.  Thank you.


3. Packing list :


one HLK-RM08K module .

one HLK-RM08K test board

one power adapter

one 2dB antenna


Company Information




Our Services




Promised by Seller




1. We accept Escrow.


2. Some of the items should match with antennas, please make sure if you need it.


3. Please check with your country customs office to determine what these additional costs will be prior to buying. We will declare the custom invoice with lower value; the lower money is just for helping you to save money.


4. Please indicate your personal requirement, such as payment, shipment, packages, value of declaration etc. At the same time leave your email address to us for urgent contact.


5. As a buyer, it is your duty to pay the tax when you make a order from abroad. Our price does not include taxes, VAT, or other hidden charges. These charges are the buyer responsibility.



 International Shipping:


1. WORLDWIDE SHIPPING. (Except some countries and APO/FPO)


2. Orders processed timely after the payment verification. Some times the date will be delayed due to a shortage. However, we will inform you via the Email.


3. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address.


4. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season.


5. 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. Our goal is customer satisfaction!


6. Due to stock status and time differences, we will choose to ship your item from our first available warehouse for fast delivery.




1. Refund or replacement request is available only the requests within 1 week after item received & returning the item as the same condition as received.


2. Please contact us to request a return authorization. Your name, auction number, and reason for return should be included in the email. All items returned must contain all original packaging materials.


3. Please repack the item carefully. Items returned will be tested and a new replacement will be shipped to the buyer immediately when found defective. In the event that a suitable replacement is not available then a refund will be issued. Shipping, handling and insurance fees are non refundable.


4. If the item is found non-defective, the item will be sent back to the buyer at buyers expense. Items returned without RMA number will be refused and returned to the sender. Buyer is responsible for All Return Postage and Shipping Charges. Buyer is responsible for additional shipping costs for items that are returned refused and/or undeliverable. We do not accept any returns without an authorization number on the box or label it is being returned in.




About US:


1. We provide technical support and user manual for customers, if you need, please contact us through Aliexpress mail, we will send the software to you by e-mail, some of the software is large, so please leave your available mail to receive them.


2. We are care about our customer. We guarantee 100% customer satisfaction. If your item is not as described or faulty when you receive it we will replace it for you with no additional charge.


3. We guarantee that our products are brand new, official and first-class quality.


4. Please contact us with any comments, questions or suggestions that you may have, we will be happy to assist you.


5. For quality control we do personally inspect for each item before shipment. All items are 100% new and inspected.


6. We hope to develop a strong, long-term, mutually beneficial relationship with you.


7. If you are a seller, we can help you send the products to your customer directly. (Please contact us first, thank you)


8. If you are interesting in our products, please send us your order soon. Thank you.