Sku: HF-A11-1

Availability: Many In Stock
Sku: HF-A11-1

Low cost, HF-A11, WiFi module

Ethernet, UART supported and High Performance


The cost effective HF-A11 Embedded WiFi Module provides 802.11b/g/n 2.4 GHz WiFi networking for a PCB device design. HF-A11 is a high performance feature rich embedded module and is available in a through hole pin header and surface mount version. Both mounting versions of the HF-A11 have the option of either an internal chip antenna or an U.FL / IPEX external antenna connection. The pin header version of the HF-A11 is also available with an SMA coaxial RF connector. (Please check with us if you would like to use SMA RF connector version.)


HF-A11 provided with 10/100 Ethernet and high speed UART interfaces available to be configure the device with a user-friendly web page or via an AT+ instruction set.


HF-A11 can operate in Infrastructure Station (STA) mode, Soft Access Point (AP) mode or AP+STA mode. Support for Router/Bridge mode networking is also provided.


With an industrial temperature range the HF-A11 can be used in devices designed for harsh environments. Multiple mounting and antenna options allow the HF-A11 to be added to existing device designs or to provide engineers with the design flexibility to meet exacting requirements. The HF-A11 is a member of a complete line of Embedded WiFi Modules provided by Elecom Electronics Supply. Need a smaller device size, lower power, SPI interface or USB? Elecom Electronics Supply can help pick the best WiFi embedded module to meet your needs.

With a small footprint, low cost, and rich feature set the HF-A11 Embedded WiFi Module is well suited for many applications, like Handheld devices, tablet...etc


  • High Performance IEEE 802.11 b/g/n (2.4 GHz) Wi-Fi Module
  • Low cost and Compact Wireless Networking Device (Size 25 x 40 mm)
  • Internal Chip Antenna or External U.FL/IPEX and SMA Antenna Options
  • Pin Header or Surface Mount Options
  • Ethernet and High Speed UART Data Interfaces
  • UART Interface is +5V Compatible and Supports Free/Auto Frame Function
  • TCP/IP/UDP/ARP/ICMP/DHCP/DNS/HTTP Networking Protocols
  • Maximum of 32 TCP Connections
  • WEP/WAP-PSK/WAP2-PSK/WAPI Wireless Security Protocols
  • WEP64/WEP128/TKIP/AES Encryption
  • STA/AP/AP+STA (Station and Access Point) Operating Modes
  • Router and Bridge Mode Networking
  • Configuration via Web Page or AT+ Instruction Set
  • +3.3V Power Supply
  • Customizable (Please Contact us for the SDK)
  • FCC/CE Certification





Wireless Parameters



Wireless standard

802.11 b/g/n

Frequency range


Transmit Power

802.11b: +20 dBm (Max.)

802.11g: +18 dBm (Max.)

802.11n: +15 dBm (Max.)



802.11b: -89 dBm

802.11g: -81dBm

802.11n: -71dBm

Antenna Option

External:I-PEX Connector

Internal:On-board chip antenna



Data Interface

UART: 1200bps - 230400bps


Ethernet: 100Mpbs

Operating Voltage

3.3V (+/-5%)

Operating Current


Operating Temperature

-40?- 85?


-45?- 125?

Dimensions and Size


Software Parameters

Network Type


Security Mechanisms




Work Mode

Transparent Transmission

Serial command

AT+instruction set

Network Protocol


Max. TCP Connection


User Configuration

Web Server?AT command config.

User Application SW

Support customized application SW



Datasheet:               HF-A11 Datasheet.pdf

Reference Design:  Schematics.pdf



HF-A11 High performance WiFi Module

Sku: HF-A11-1

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