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Serial WiFi Adapter - RS232

  • Model: UCW232C


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Notice: this part has been discontinued and replaced by part WA232E.

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/n infrastructure or Adhoc mode (Simple AP / Station Mode) networking which allows you to use existing wireless WiFi network connectivity.

This Serial to WiFi adapter is designed around the BCM4390 processor from Broadcom which includes an ARM Cortex-M3 32-bit CPU, 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 - 24VDC through the screw terminals on the side of the adapter or through pin 9 in the DB9 connector.

The parameters can be configured over WiFi by using any standard web browser.
Virtual COM port software for creating a virtual COM port can be downloaded for free for Windows. This adapter is also compatible with several 3rd party VCOM software.

This adapter is ideal for any home, office, laboratory or light industrial environment and will allow you to connect any serial device to your WiFi network under Windows, iOS, 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
  • New generation Broadcom BCM4390 processor
  • Highly reliable ARM Cortex-M3 32-bit CPU
  • Can be powered by: USB, power supply or battery
  • Compatible with all TCP/IP based devices
  • Free downloadable virtual COM port software
  • Supports Secure Wi-Fi
  • Built-in Full TCP/IP stack, no external drivers required
  • Works with most mobile devices / operating systems
  • Parameters configurable by web browser
  • LED status lights
  • USB power cable included
Included items
  • Serial WiFi adapter
  • USB cable (for power)
  • Di-pole antenna
  • DB9 Male/male gender changer


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 UCW232C
Operating system Virtual COM software available for Windows 10, 8, 7, Vista, XP, 2000 (32/64-bit)
Can also connect with Android and iOS (no virtual COM software)
Processor Broadcom BCM4390
ARM Cortex-M3 @48MHz, 32-bit CPU + WLAN CORE
Memory: 448KB RAM and 2MB flash
Network IEEE 802.11 b/g/n
Frequency 2.412 - 2.484 GHz
Protocols ARP, IP, ICMP, UDP, TCP, DHCP, Modbus TCP RTU (RS485)
Network mode Simple AP, Station, Dual (AP & Station) / Infrastructure, Ad-Hoc
Works without virtual COM software? Yes, can communicate with the serial port over a raw TCP socket
Max simultaneous clients 5
Buffer size UART in - network: 6Kb
network - UART out: 8Kb
Minimum receiver sensitivity -80dBm
Power consumption Max. 360mA peak at 3.3V
Baud rate 9600 to 921,600 bps
Data bits 8
Parity None, even, odd
Stop bits 1
Parameter configuration Web browser over WiFi
Operating distance Up to 330 feet (100 meters)
DEC/DTE Manual switch
RS232 Signals TX, RX, CTS, RTS, GND
Flow control Hardware RTS/CTS, 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 88 x 33 x 16 mm
Certifications CE, FCC, ROHS

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

Read the Review
Date Added: 03/12/2017 by Michael Mayer
5 of 5 Stars!5 of 5 Stars!
Bought this to control my Celestron Nexstar wirelessly using Sky Safari and my iPad. Only issue was...

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

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

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