High-Flying UART to Wi-Fi (802.11 b/g/n)/Ethernet 2x7 SMD Module for External I-PEX Antenna

Part Number : HF-A21-SMT-0

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    HF-A21-SMT-0

    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.


    • 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

    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

    1x High-Flying HF-A21-SMT-0

    1x Instruction Manual
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