
Bluetooth Serial Adapter
WCS-232V4
User Manual
Version 4.0
1.Introduction
WCS-232 converts RS-232 serial signals to Bluetooth RF signals.
■ Product box contains
- RS232 to RF Converter 2EA - User Manual
- USB Power cable 2EA
2. Specifications
Model Name WCS-232V4
Type Bluetooth Serial Adapter
Distance Nom.100m up to 500m using dipole antenna
Voltage 5V ~ 12V/DC
Wireless interface Bluetooth Specification Version 2.0+EDR
Class1
Frequency bandwidth 2402 ~ 2480 MHz
Radio mode Frequency hopping
Channels 79
Modulation GFSK, π/4DQPSK, 8DPSK
Current Max 200 mA (5V DC)
Temperature -20 ~ 55 °C
Antenna
+1dBi Stub Antenna
+3dBi Dipole Antenna(optional)
+5dBi Dipole Antenna(optional)
Serial communication 1200 BPS – 115.2 KBPS Full Duplex
8 Data bits
Odd, Even, No Parity
1,2 Stop bits
Flow Control RTS/CTS ON/Off possible,
DTR/DSR/DCD Loop back connected
3. Architecture
1) External View

2) Mode Switch
Setup Active : Active Mode
Setup Active : Setup Mode
3) LED
- LINK : Turns red when power is supplied
Turns green when remotely linked with the other party
- TxD : Turns green when data is transmitting (turns on faintly only if linked)
- RxD : Turns red when data is receiving
4) Connector
DB-9 Connector Pin-out
4. Installation Procedures
1) Connection
There is no need to install additional programs in your computer or communication devices to use the WCS-232.
Connect the WCS-232 to a serial port at your computer or communication device and supply it with power. Then
you can easily access it as if you were using the existing serial port.
WCS-232 can be powered by the following methods: DC power supply, PC USB port through USB cable or DB9
pin connector (available only if special serial ports are used).
A Bluetooth connection between two devices using the WCS-232 is automatically established when both WCS232 are powered on. After that, LINK LED turns red and you are free to use the WCS-232
2) Environment Setting
Since WCS-232s are connected onto the serial port of your PC or communication device, you should specify the
serial port environment information (Baud rate, data bits, parity bit, stop bit, flow control, etc.) and the RF
connection (device name, operating mode, target address, etc.) for mutual communication.
RF connection setting is required only if you communicate with other manufacturer’s Bluetooth devices instead of
the WCS-232 or change the initial setting.
For environment setting, please use “Hyper terminal” included in your Windows’ operating system.
5. Operating Environment Setting
1) Procedures
WCS-232 can set baud rate, parity, stop bit, device name, target adapter and operating mode using Hyper
Terminal.
①. Connect one WCS-232 to the PC serial port and power it on.
②. Run Windows’ Hyper Terminal program.
③. Whenever you change environment setting, you must Set baud rate, data bits, parity and stop bit to
9600-8-NONE-1 (Initial Factory Setting) at Hyper Terminal.
④. Select setup mode at the WCS-232 mode switch. Then software version information will be displayed

Software version
Device name
Target adapter address
⑥. Set up serial port.
⑦. Setup RF connection.
⑧. After completing the setting, be sure to execute ‘X’ command and save, and then the Mode Switch to ‘Active’.
■ Reference:
If you enter ‘?’, the list for all commands is displayed, and if ‘?<command>’, how to use the requested command
is displayed. All commands should be typed with capital letter. All commands and setting values are casesensitive.
Authentication
Adapter address
COM port setting
Factory default setting
2) Serial settings
■ Example of Baud Rate setting (9600 bps -> 19200 bps)
① Type ‘B’.

②. Type ‘4’ to select 19200 bps.
③. The set value is shown on the screen again. (All the same in the next procedures)
■ Example of Flow control setting (None -> Hardware)
① Type ‘F’.
②. Type ‘1’
■ Example of Stop bit setting (1 bit -> 2 bits)
① Type ‘S’.
to use hardware flow control.