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HF-A21-SMT Wi-Fi Module Eval Kit


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The HF-A21 is a high-performance surface mount Wi-Fi module, allowing devices to easily access wireless networks through UART or 100M Eth interfaces.

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£ 44.99 + VAT

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The HF-A21-SMT-EVK allows connectivity for software development without the need to place a module on a PCB.

HF-A21-SMT Surface Mount Wi-Fi Module

  • Support IEEE802.11b/g/n Wireless Standards
  • Support TCP/IP/UDP Network Protocols
  • Support UART/GPIO/Ethernet Data Interface
  • Support Work As STA/AP/AP+STA Mode
  • Support Router/Bridge Mode Networking
  • Support Internal/External Antenna Option
  • Support AT+ Instruction Set for Configuration
  • Support Friendly Web Configuration Page
  • Support Palmodic Signal
  • Support Smart Link Application Tools
  • Single +3.3V Power Supply
  • Small Size: 25 x 40mm
  • FCC/CE Certificated

Additional Features

Wireless Parameters

  • Certification: FCC/CE
  • Wireless standard: 802.11 b/g/n
  • Frequency range: 2.412GHz-2.484GHz
  • Transmit Power:
    • 802.11b: +20 dBm (Max.)
    • 802.11g: +18 dBm (Max.)
    • 802.11n: +15 dBm (Max.)
    • Configurable
  • Receiver Sensitivity:
    • 802.11b: -89 dBm
    • 802.11g: -81dBm
    • 802.11n: -71dBm
  • Antenna Option:
    • External: I-PEX Connector or PIN 25 line out
    • Internal:On-board PCB antenna

Hardware Parameters

  • Data Interface:
    • UART: 1200bps - 230400bps
    • GPIO, I2C, USB
    • Ethernet: 10Mbps/100Mpbs
  • Operating Voltage: 3.3V (+/-5%)
  • Operating Current: 170mA~400mA
  • Operating Temperature: -40?- 85?
  • Storage Temperature: -45?- 125?
  • Dimensions and Size: 25×40×3mm SMT

Software Parameters

  • Network Type: STA /AP/AP+STA mode
  • Security Mechanisms: WEP/WPA-PSK/WPA2-PSK/WAPI
  • Encryption: WEP64/WEP128/TKIP/AES
  • Work Mode: Transparent Transmission
  • Serial command: AT+instruction set
  • Network Protocol: TCP/UDP/ARP/ICMP/DHCP/DNS/HTTP
  • Max. TCP Connection: 32
  • User Configuration: Web Server+AT command config
  • User Application SW:
    • Support customized application SW
    • Provide SDK package
    • Provide smart link tools

HF-A21-SMT WiFi Module New Features

HF-A21-SMT WiFi Module User Manual