HI-LINK HLK-RM04 Serial Port-Ethernet-Wi-Fi Adapter Module - Blue + Black

SKU: 214540 (Added on -)
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List Price: US$16.30
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HI-LINK HLK-RM04 Serial Port-Ethernet-Wi-Fi Adapter Module - Blue + Black
- Brand: HI-LINK
- Model: HLK-RM04
- Quantity: 1
- Color: Blue + black
- Material: FR4
- Technical 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: 1~14
- Frequency range: 2.4~2.4835GHz
- Emission power: 12~15dBm
- Antenna type: Onboard antenna / External antenna
- Functional Parameters:
- Wi-Fi work mode: Client / AP / Router
- WDS Function: Supports WDS wireless bridge connection
- Wireless security: Wireless MAC address filtering; Wireless security function switch; 64 / 128 / 152 bit WEP encryption; WPA-PSK / WPA2-PSKWPA / WPA2 security mechanism
- Network management: Remote Web management; Configuration file import and export; WEB software upgrade
- Serial to Network:
- Maximum transmission rate: 230400bps
- TCP connection: Max. connection number>20
- UDP connection: Max. connection number>20
- Serial baud rate: 50~230400bps
- Other Parameters:
- Status indicator: Status indicator
- Environmental standard:
- Operating temperature: -20'C~+70'C
- Operating humidity: 10%~90% RH no condensing
- Storage temperature: -40'C~80'C
- Storage humidity: 5%~90% RH no condensing
- Additional properties: Frequency bandwidth optional: 20MHz~40MHz automatically
- The range of baud rate: 1200~500000bps
- Supports transparent transmission mode
- Supports wireless roam
- Supports multiple network protocols: PPPOE / TCP / UDP / DDDNS / DHCP / DNS / HTTP / Firewire
- Supports AT+ instruction set
- Supports two config methods: Serial / WEB
-HLK-RM04 is a new low-cost embedded UART-ETH-WIFI module (serial port - Ethernet - Wireless network); 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 (Wi-Fi) interface between the conversions; Through the HLK-RM04 module, the traditional serial devices do not need to change any configuration, data can be transmitted through the Internet network; Provides a quick solution for the users serial devices to transfer data via Ethernet
- Packing List:
- 1 x Module 
Datasheet: http://m5.img.dxcdn.com/CDDriver/CD/sku.214540.zip

Dimensions: 1.57 in x 1.18 in x 0.35 in (4.0 cm x 3.0 cm x 0.9 cm)
Weight: 0.21 oz (6 g)

All packages from DX.com are sent without DX logo or any information indicating DX.com. Due to package variations from suppliers, the product packaging customers receive may be different from the images displayed.

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Rate USD$ 13.29 shipped USD$ 13.25 shipped USD$ 13.2 shipped

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Average Customer Review (3 customer reviews) 5

100% of customers would recommend this product to a friend (3 out of 3)

  • 5 star: 2 (0%)
  • 4 star: 1 (0%)
  • 3 star: 0 (0%)
  • 2 star: 0 (0%)
  • 1 star: 0 (0%)

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  • No onboard ceramic antenna

    posted by subinmartin on 14:37:00 G1T 22/01/2014 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: Great little device(360Mhz MIPS CPU). You can load OpenWrt and experiment/learn with this. Mine came with shielded cap. You can also remove the shield and upgrade the SDRAM to 32MB so that it runs faster with custom firmware which has more feature support for ex: USB.

    Cons: Unfortunately it comes with no on-board antenna unlike shown in the picture.

    Other: I would definitely recommend buying this

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  • Good module for very good price

    posted by k4chn1k on 14:28:25 G8T 14/08/2013 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: Perfect size for integration to project Requires only 5V/200mA Has 3.3V output Internal and external antenna supported Easy to use Web configuration is very straight forward

    Cons: Heats little bit 2mm pitch for pins (standard is 2.54)

    Other: Definitely recommand for any home automation

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  • Nifty module

    posted by jakent on 09:52:04 G6T 14/06/2013 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: If you use it for what its designed for, its a very versatile device. It works both in AP and station modes, and can be configured to either accept or initiate socket connections. It runs Linux, and there are a few backdoors that you can use to get a shell on the device. It can be reflashed with alternate firmware, and it is getting some community attention as well. It also has USB host/device modes, which with alternate firmware could be very useful for some applications.

    Cons: The bootloader is locked down and at least one of the backdoors in the stock firmware could potentially be considered a security risk. Alternate firmware probably would be a good idea. It also gets quite warm under use. Depending on the environment it is used in, cooling may be required. Finally, be aware it is NOT breadboard compatible; pins are on 2mm spacing, not 0.1"/2.54mm spacing required for breadboarding. If you want to prototype with this module, you should get sku# 215334.

    Other: It does what its designed to do. It is a 360 MHz MIPS32 CPU, with 16 MB SDRAM and 4 MB SPI flash. It is possible to upgrade to a 32 MB SDRAM chip, as well as upgrade the SPI flash.

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