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Serial WiFi Adapter - RS232

  • Part: UCW232
  • In Stock


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If you want to connect your serial RS232 device to your computer over WiFi then this Serial to WiFi adapter is what you need. It will let you connect a serial RS232 device to any secure or open wireless network or access point.

Data can be transferred over TCP/IP, UDP or HTTP with the advantage of using 802.11 b/g infrastructure or Adhoc mode (Simple AP) networking which allows you to use existing wireless WiFi network connectivity.

This Serial to WiFi adapter is designed around the AX22011 processor from ASIX, which ensures simple and reliable operation and a selection of features and available customized settings for your particular network and application.

The included USB cable can be used to power this adapter however a standard mini USB 110VAC/5VDC power supply adapter can also be used. Alternatively this serial to WiFi adapter can be powered by a 3.7 - 5.0VDC lithium battery or an external USB battery power pack. Lastly, the adapter can also be powered by 4.5 - 27VDC through the screw terminals on the side of the adapter.

The parameters can be configured over WiFi by using any standard web browser, over Telnet or by using the included configuration software. Alternatively the parameters can be configured through the serial RS232 port by using a terminal software such as Tera Term or Putty, the adapter will then accept ascii commands.
When using the included configuration software an option for creating a virtual COM port is available, so no third party virtual COM software is needed.

This adapter is ideal for any home, office, laboratory or factory environment and will allow you to connect any serial device to your WiFi network, iPhone, Android and most other mobile WiFi enabled applications. Tested working with ASCOM drivers and most types of astronomy telescopes and software, see our Controlling a Telescope over WiFi setup guide for details.

serial wifi setup

Overall features
  • Can be powered by: USB, power supply or battery
  • Compatible with all TCP/IP based devices
  • Highly configurable over serial or wireless interface
  • Supports Secure Wi-Fi (WEP64, WEP128, TKIP, AES)
  • Built-in Full TCP/IP stack, no external drivers required
  • Works with most mobile devices / operating systems
  • Configurable by web browser, Telnet, RS232 or
    configuration utility
  • DCE/DTE controlled by switch
  • LED status lights
  • USB power cable included
Included items
  • Serial WiFi adapter
  • USB cable (for power)
  • Datasheet
  • Di-pole antenna


Useful optional accessories
(not included)

usb power supply
USB mini 110V/5VDC Power adapter

Battery pack
Rechargeable battery pack

gender changer
Gender Changer

null modem adapter
Null modem adapter
Part number WA-232B
Operating system Virtual COM software available for Windows 8, 7, Vista, XP, 2000 (32/64-bit)
Can also connect with Android and iOS (no virtual COM software)
Processor ASIX AX22011
Network IEEE 802.11 b/g
Frequency 2.412 - 2.484 GHz
Security WEP64, WEP128, TKIP, WPA2 (infrastructure)
Supports server and client mode and user defined socket port number.
Modbus support No
Network mode Simple AP (optional AdHoc) / Infrastructure mode
Output power (peak) 802.11b: 16.5dbm
802.11g: 14dbm at 54 Mbps; 15dbm at 48Mbps; 16dbm at 6 - 36Mbps
Max simultaneous clients Port 5000: 1 client
Port 80: 5 clients
Receive Sensitivity -88dBm typ.
Power consumption Max. 360mA peak at 3.3V
Baud rate 1200 to 921,600 bps
Data bits 5, 6, 7, 8
Parity None, even, odd
Stop bits 1, 1.5, 2
Parameter configuration
  • Configuration utility software (included) over WiFi
  • Web browser over WiFi
  • Telnet over WiFi
  • Serial RS232 port
Operating distance Up to 330 feet (100 meters)
DEC/DTE Manual switch
RS232 Signals TX, RX, CTS, RTS, GND
Flow control Hardware RTS/CTS, software XON/XOFF, None
Serial port 1-port RS232 female D-sub 9-pin
Antenna External 2dBi di-pole, SMA Female
Power supply
Operating temp. 0C to +70C
External battery option Yes
Dimensions 80 x 40 x 18 mm
Certifications CE, FCC, ROHS

For alternative wireless serial solutions please see our full selection of wireless RS232 adapters.

Read the Review
Date Added: 11/02/2014 by Michael Kaplan
5 of 5 Stars5 of 5 Stars
Works great, thanks.

Read the Review
Date Added: 09/10/2013 by Larry Massa
5 of 5 Stars5 of 5 Stars
Works great at a fraction of the price of other similar adapters..! Would buy again.

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