Your present location:WIFI MODULE2.4G WIFI MODULE > 3131A-S
  • Name: 3131A-S
  • Main chip: hi1131s
  • Package size: 12.0*12.0mm LGA
  • Physical interface: SDIO
  • Wireless standard: 802.11b/g/n
  • Frequency band: 2.4G
  • Broadband: HT20/HT40
  • RF Chains: 1T1R
  • Transmission speed: 150Mbps
  • Working voltage: 3.3Vdc
  • Antenna connection method: External

Product introduction

Meet 802.11b/g/n IEEE wireless standard and IEEE 802.11e(WMM)、IEEE 802.11i(WPA,WPA2)、IEEE 802.11hTPC 、IEEE 802.11k、WAPI 

Support 64/128 bit WEP data encryption   

Support WPA-PSK/WPA2-PSK, WPA/WPA2 security mechanism

Module is: Tablet / notebook Advertising machine /TV board OTT/IPTV/DVB/STB DV/ IPC/Mini driving recorder / doorbell Smart TV / intelligent projector Pico VR/AR terminal Wireless storage Printer /POS machine / electronic said Vehicle mounted front / rear terminal UAV / robot Intelligent Gateway Toys Lighting lamps / intelligent street lamps Smart home appliances / appliances Instrument and meter (water, electricity, gas) Smart city and other consumer electronic products

Special explanation: This module has ultra low power standby, beyond Broadcom, the industry's best standby power level; support LiteOS solutions, fast wake-up service; high transmit power, to support better performance through the wall Home Furnishing scene; Cooperate with Hass main chip, customers need not worry about WiFi technical support. For large volume of customer use only.


Hardware specification

Product model
  • 3131A-S
Interface type
  • SDIO
Work channel
    • 1-13(default  Channel Plan WW13, other Channel Plan optional) 
    • 11: (Ch. 1-11) – United States(North America)
      13: (Ch. 1-13) – Europe
      14: (Ch. 1-14) – Japan
Frequency range
  • 2.4GHz-2.4835GHz
Modulation mode
Transmission speed
  • 802.11b: 22,11,5.5,2,1 Mbps 
    • 802.11g:108,54,48,36,24,18,12,9,6Mbps
    • 802.11n:up to 150Mbps
Receiving sensitivity
  • 802.11b@8% PER
    802.11g@10% PER
    802.11n@10% PER
Working voltage
  • 3.3V
Working mode


  • Ad-hoc mode (Peer-to-Peer )
    Infrastructure mode
    Software AP
    WiFi Direct
Support operating system
  • Huawei LiteOS/Linux
Mode size
  • 12.0*12.0mm
Use environment
    • Working environment:-30℃~70℃
    • working humidity:10%~90%RH Non condensing
    • Storage temperature:-40℃~125℃
    • Storage humidity:5%~90%RH Non condensing


Reference application circuit diagram