Industrial Serial TTL UART to Wifi Module with On-board Antenna

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Industrial Serial TTL UART to Wifi Module with On-board Antenna
Industrial Serial TTL UART to Wifi Module with On-board Antenna
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Price: $9.80
Availability: In Stock
Model: USR-WIFI232-A2
Manufacturer: USR IOT
Average Rating: Not Rated

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Unique Features

1.Support DHCP and DNS

2.Support Built-in Webpage

3.Support Httpd Client and WEB IO function

Wifi Module Download

User Manual: USR-WIFI232-A2

Evaluation Kit: USR-WIFI232-2EV2

Client Support Center: submit your ticket at If you have technical problems about the product.

Wifi Module Introduction

USR-WIFI232-A2 is an embedded 802.11 b/g/n wifi module. It can connect traditional serial device and MCU controlled device with wifi network to realize control and management.The Module has an Ethernet port. It can realize mutual data transmission among wifi, serial and Ethernet.

Wifi Module Feature

  • Support 802.11b/g/n wireless standard
  • Support TCP/IP/UDP network protocol
  • Support UART/GPIO/Ethernet data interface
  • Support work as STA/AP/AP+STA mode
  • Support router and bridge mode
  • Internal antenna
  • Support transparent transmission mode
  • Provide AT+ instruction set for configuration
  • Provide friendly web configuration page
  • Support heartbeat signal and wifi connection indication
  • Support UART auto-frame function
  • 3.3V power supply
  • Max transmission distance: 200 meters (open horizon)

Wifi Module Parameter

Wireless Parameters
Wireless Standard
802.11 b/g/n
Frequency Range
Transmit Power
802.11b: +17dBm (Max.)
802.11g: +16dBm (Max.)
802.11n: +15dBm (Max.)
Receive Sensitivity
802.11b: -89dBm
802.11g: -76dBm
802.11n: -74dBm
Internal: On-board antenna
Hardware Parameter
Data Interface
UART: 300bps~460800bps
Ethernet: 10Mbps/100Mpbs
Working Voltage
Working Current
AP: 169mA (average), 305mA (peak)
STA: 164mA (average), 197mA (peak)
Working Temp.
-40°C ~ 85°C
Storage Temp.
-40°C- 125°C
25mm x 40mm x8mm
Software Parameter
Wireless Network Type
Station/AP mode
Security Mechanism
Encryption Type
Work Mode
Transparent transmission mode, serial command mode
Setting Command
AT+ instruction set
Network Protocol
Max. Client Number in TCP Server Mode
User Configuration
Web Server+AT command config
Client Application Software
Clients can customize application software

Built-in Webpage

Wifi Module Images

wifi module

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