WIFI232-A2, Industrial High Performance WiFi Module

Tax included

WIFI232-A2 is a high performance UART WiFi module with shield case and onboard antenna. It is designed for occasions where large data flow is required and power consumption will not be a concern.


If you have any questions on this product please feel free to contact us.

*Disclaimer: The images are merely illustrative.


  • Easy to use: just like a simple UART module (AT commands provided)
  • Start up time: 6s (most WiFi modules in the market require more than 6s to start up, even up to 30s)
  • Power consumption: 164mA-305mA@3.3V (suit for non-battery applications)
  • Shield case: protects the core circuit (usually no shielding for most other modules)
  • Ideal hotspot: supports connecting plenty devices, supports route/bridge modes (router AP solution)
  • TCPB function: supports 2x TCP, two network connections at the same time (rare feature in the market)

Functionality & Performance

  • Solution: Marvell WiFi (router solution, hardware AP), ARM
  • Wireless LAN protocols: IEEE 802.11 b/g/n
  • WIFI security algorithms: WEP/WPA-PSK/WPA2-PSK
  • Working modes: STA/AP/STA+AP (AP means WiFi hotspot, STA means terminal device)
    • AP mode: up to 32 devices
    • STA mode: server allows 32 connections
    • AP+STA mode: AP allows 32 clients with route function
  • Multi network protocols: TCP/UDP/ARP/ICMP/HTTP/DNS/DHCP
  • Supports DHCP, to allocate IP automatically
  • Supports AT+ instructions set and Web configuration
  • Supports Transparent/Agreement transmission modes, 4K TCP cache, totally 1M cache
  • Supports configuring UART framing delay and data volume
  • Up to 460800bps baudrate, supports hardware flow
  • Supports Ethernet data transmission, PWM output, GPIO control
  • Firmware is upgradable via web
  • Embedded PA, bi-transferring data on 57600 baudrate without packet loss, easily pass through three concrete walls
  • Communication distance: (between two modules under open and wide environment)
    • 280 metres with external 3DB antenna
    • 200 metres with onboard antenna
  • Supports factory reset: pull-down the Reload IO port for 3s, restore the module to its factory settings immediately
  • Supports route/bridge network architectures (thanks to the router solution)
  • Built-in watch dog and heartbeat mechanism to keep online


  • Test software for WINDOWS, iOS, Android
  • Communication example source code for iOS, Android

Development Resources

Wiki : www.waveshare.com/wiki/WIFI232-A2

Weight: 0.005 kg

  1. WIFI232-A2 x1

Selection Guide

General Comparison WIFI232-A2 WIFI232-B2
Suit for high flow high flow
AP mode connections 32 32
STA mode connections 32 32
AP+STA mode connections 32 32
Power consumption high high
Interface 2.0mm, 2x7 2.0mm, 2x7
Antenna onboard external
Shield case
Dimension (mm) 25 x 40 25 x 40
Specifications WIFI232-A2 WIFI232-B2
WiFi chip Marvell WiFi (router solution, hardware AP)
Microcontroller ARM
Wireless protocol 802.11 b/g/n, 2.412GHz-2.484GHz
TX power 802.11b: +19dBm(Max.@11Mbps)
802.11g: +18dBm(Max.@54Mbps)
802.11n: +17dBm(Max.@HT20,MCS7)
802.11n: +17dBm(Max.@HT50,MCS7)
pass through three concrete walls under 57600 baudrate,
embedded PA, configurable power
RX sensitivity 802.11b: -89dBm (@11Mbps)
802.11g: -81dBm (@54Mbps) 
802.11n: -73dBm (@HT20,MCS7) 
802.11n: -71dBm (@HT40,MCS7)
Antenna onboard PCB antenna external 3DB antenna
Communication distance
(open environment)
200 metres 280 metres
UART baudrate: 300bps-460800bps
hardware flow: supported
framing delay and data volume configuration: supported
transparent/agreement transmission: supported (4K TCP cache, totally 1M cache)
Other interfaces Ethernet (100M), PWM, GPIO
Connector through hole: 2x7, 2.0mm pin headers
Operating voltage 3.3~3.6V
Operating current 170~350 mA @ 3.3V
Temperature operating temperature: -40℃- 85℃, storage temperature: -45℃- 125℃
Dimension 25mmx40mmx8mm
AP mode supported, up to 32 devices
STA mode supported, server allows 32 connections
AP+STA mode supported, AP allows 32 clients with route function
Security algorithms WEP/WPA-PSK/WPA2-PSK
Encryption WEP64/WEP128/TKIP/AES
Misc supports route/bridge modes
Online mechanism built-in watch dog and heartbeat mechanism to keep online
Firmware upgrade via web
User configuration AT+ instructions set, web page
Android/iOS terminal
Restore factory pull-down the Reload IO port for 3s, no worries for faulty setting
Electrical certification FCC/CE
Process standard RoHS

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