Viewed products

Recently Viewed

Sale! HF-A21-SMT Wi-Fi Module View larger

HF-A21-SMT Wi-Fi Module


New product

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.

If you would like more information or volume pricing please contact us

If you would like more information or volume pricing please contact us

More details

More info

HF-A21-SMT WiFi Module New Features

HF-A21-SMT WiFi Module User Manual

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