Omega WRS232-USB Quick Start Manual

When installing your wireless transmitter it is important
to position your device in such a way as to optimize
the antenna location with what’s known as the “Fresnel
Zone”.

Fresnel Zone

No co-location with other radio transmitters is
allowed. By definition, co-location is when another
radio device or its antenna is located within 20
cm of your receiver/transmitter and can transmit
simultaneously with your unit.

Multiple Transmitters

When using one transmitter with one receiver, there is
no need to change the channel number. However, one
receiver can communicate with multiple transmitters (up
to 12) one at a time by changing the channel number of
the receiver module to match the transmitter module. So
if there are five transmitters, they should be configured
to channels 1 thru 5.

Then the receiver can be set to channel 1 to communicate
with transmitter #1, or channel 2 to communicate with
transmitter #2, and so on and so forth.

Maximizing Transmission Range

Position your receiver in a central location.
When multiple transmitter are in operation, position
your receiver unit in a central space if possible in equal
distance to each wireless transmitter.

Move your system components higher off the floor and
away from exterior walls. Avoid installing your system

components too close to the floor or near your building’s
exterior walls. The closer your transmitter and receiver
unit are the greater the interference and loss of signal
strength will be.

Maintain a line of sight between transmitter/receiver.
Maintaining a clear line of sight between your
transmitter and receiver unit will produce improved
signal strength over a system that has obstacles blocking
it.

5

6

WRS232-USB

Universal Wireless RS232

to USB Receiver,

WRS232 Wireless Transmitter,

WUSB Wireless Receiver

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects
in materials and workmanship for a period of 13 months from
date of purchase. OMEGA’s WARRANTY adds an additional one (1)
month grace period to the normal one (1) year product warranty
to cover handling and shipping time. This ensures that OMEGA’s
customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for
evaluation. OMEGA’s Customer Service Department will issue an
Authorized Return (AR) number immediately upon phone or written
request. Upon examination by OMEGA, if the unit is found to be
defective, it will be repaired or replaced at no charge. OMEGA’s
WARRANTY does not apply to defects resulting from any action of
the purchaser, including but not limited to mishandling, improper
interfacing, operation outside of design limits, improper repair,
or unauthorized modification. This WARRANTY is VOID if the unit
shows evidence of having been tampered with or shows evidence of
having been damaged as a result of excessive corrosion; or current,
heat, moisture or vibration; improper specification; misapplication;
misuse or other operating conditions outside of OMEGA’s control.
Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various
products. However, OMEGA neither assumes responsibility for
any omissions or errors nor assumes liability for any damages
that result from the use if its products in accordance with
information provided by OMEGA, either verbal or written.
OMEGA warrants only that the parts manufactured by the
company will be as specified and free of defects. OMEGA
MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF
ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT
THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING
ANY WARRANTY OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED.
LIMITATION OF LIABILITY: The remedies of purchaser set forth
herein are exclusive, and the total liability of OMEGA with
respect to this order, whether based on contract, warranty,
negligence, indemnification, strict liability or otherwise,
shall not exceed the purchase price of the component upon
which liability is based. In no event shall OMEGA be liable for
consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used,
nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC),
used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or
with any nuclear installation or activity, medical application, used on
humans, or misused in any way, OMEGA assumes no responsibility
as set forth in our basic WARRANTY/DISCLAIMER language, and,
additionally, purchaser will indemnify OMEGA and hold OMEGA
harmless from any liability or damage whatsoever arising out of the use
of the Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA
Customer Service Department. BEFORE RETURNING ANY
PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN
AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER
SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING
DELAYS). The assigned AR number should then be marked on the
outside of the return package and on any correspondence.

FOR WARRANTY RETURNS,
please have the following
information available BEFORE
contacting OMEGA:

1. Purchase Order number under
which the product was
PURCHASED,

2. Model and serial number of
the product under warranty, and

3. Repair instructions and/or
specific problems relative to
the product.

FOR NON-WARRANTY REPAIRS,
consult OMEGA for current repair
charges. Have the following
information available BEFORE
contacting OMEGA:

1. Purchase Order number to
cover
the COST of the repair or
calibration,

2. Model and serial number of the
product, and

3. Repair instructions and/or specific
problems relative to the product.

OMEGA’s policy is to make running changes, not model changes,
whenever an improvement is possible. This affords our customers
the latest in technology and engineering.
OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2013 OMEGA ENGINEERING, INC. All rights reserved.
This document may not be copied, photocopied, reproduced,
translated, or reduced to any electronic medium or machine-readable
form, in whole or in part, without the prior written consent of OMEGA
ENGINEERING, INC.

MQS4588/1013

RS232 Cable Connections

RJ12 to DB9 connector (female)

RJ12 Pin # DB9 Pin #

Normal (Config)

3 RX (TX) 2 RX

4 TX (RX) 3 TX

5 GND 5 GND

1 Power –––––

Specifications

Wireless Transmitter, WRS232-USB

Operating 0 to 50ºC (32 to 122ºF)
Ambient 0 to 95% Relative
Conditions: Humidity (Non-Condensing)

Device Interface: RS232
RS232 Cable: RJ12 to DB9 connector (Female)
RS232 9600 BPS, 8 Bits of Data,

Communication:

1 Stop Bit, No Parity

RF Transmitter ISM 2.4 GHz, Direct sequence
Carrier: spread spectrum, License free

world wide

RF Data Packet IEEE 802.15.4 open
Standard: communication architecture

RF Output Power: 10 dBm (10 mW)
RF Range: Up to 40 m (130') indoor/urban

Up to 120 m (400') outdoor/line of

sight

Supply Voltage: External 9 Vdc, or Powered thru RJ12

connection

Supply Current: 60 mA
AC Adapter: 100-240 Vac, 50-60 Hz, UL, CE, FCC

marked

Output Voltage: 9 Vdc @ 1.7A
Output Plug: Center positive, coax 2.0/5.5/10 mm

Enclosure: ABS Plastic, Bone color
Dimensions: 70 x 51 x 20 mm (2.75" x 2" x 0.80")
Weight: 60 g

For complete product manual:
www.omega.com/manuals/manualpdf/M4588.pdf

WUSB WIRELESS RECEIVER

WRS232 WIRELESS TRANSMITTER

FRESNEL ZONE

TRANSMITTER

RECEIVER

NOTE:

omega.com [e-mail]

®

Servicing North America:

U.S.A.: OMEGA Engineering, Inc., One Omega Dr.

P.O. Box 4047, Stamford, CT 06905-0047 USA
Toll-Free: 1-800-826-6342 (USA & Canada Only)

Customer Service: 1-800-622-2378 (USA & Canada Only)
Engineering Service: 1-800-872-9436 (USA & Canada Only)
Tel: [phone] Fax: [phone]
e-mail: [e-mail]

For Other Locations Visit omega.com/worldwide

It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety
and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of
its products to the European New Approach Directives. OMEGA will add the CE
mark to every appropriate device upon certification.
The information contained in this document is believed to be correct, but
OMEGA accepts no liability for any errors it contains, and reserves the right to
alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used
for, human applications.

USB Cable Connections

USB Driver Installation

To install the USB software drivers that are required for
your wireless receiver to operate correctly follow these
procedures.

1. Connect the wireless receiver to your computer with
the USB cable provided in the box with your device.
You should get a notice box that indicates that your
computer “Has Found New Hardware”.

2. Your computer will then launch the Found New
Hardware Wizard. Follow the instructions indicated
on the Wizard boxes.

After completing the Found New Hardware Wizard
your system will ask that you repeat this process. This
is normal. You should repeat the steps outlined here
twice. After the second driver is installed you should
then get the “New Hardware Ready For Use” notice.

Wireless Transmitter Module

The transmitter module is connected to an RS232 device
with the RJ12 to DB9 connector cable provided. There
are two slide switches on the unit:

SW1

• Standard Power – The RF module is powered

on continuously. The transmitter module can
communicate wireless at any time.

• Save Power – The RF Module is powered n only when

there is data activity on the RS232 port, otherwise the
RF module is set to sleep mode to save power. This
mode may be selected when the wireless transmitter
is connected & powered by a battery powered device.
While the RF module is in sleep mode, there is no
wireless communication between the transmitter &
receiver modules. The RF module can only be wakened
from the RS232 device when there is data activity.

START HERE

2

3

4

Using This Quick Start Manual

Use this Quick Start Manual with your
WRS232-USB universal wireless RS232 to USB
transceiver for quick installation and basic
operation. For detailed information, refer to the
User’s Guide (Manual # M4588).

General Information

OMEGA’s new universal wireless RS232 to USB
transceiver interfaces to any RS232 device, and
makes it wireless. The wireless transmitter module
connects to an RS232 device. The wireless receiver
module connects to the PC via USB interface.
The PC communicates with the RS232 device
though the wireless receiver module. The wireless
transmitter/receiver modules are transparent to
the PC as if it is directly connected to the RS232
device.

The transmitter/receiver module comes with two
LED indicators. The green LED indicates wireless
data transmission (TX). The red LED indicates
wireless data reception (RX).

WRS232 Wireless Transmitter Module

WUSB Wireless Receiver Module

SW2

• Normal – The slide switch should be set to Normal

when the transmitter is connected to an RS232 device.

• Config – The slide switch should be set to Config

when the transmitter is connected to the PC for
configuration.

The transmitter can be powered either directly thru the RJ12
connection by the RS232 device, or can be powered by an
external 9 Vdc adaptor. The DC adaptor

Transmitter/Receiver Configuration

The Configuration CD comes with “wizard”
software which allows the user to read or change
the configuration of the transmitter/receiver. You
need to install the software by following the menus.
Once the software is installed, you can configure the
transmitter (thru RS232 connection) or receiver (thru
USB connection) from the PC software.

You can change the baud rate and/or the channel
number for the transmitter/receiver using the wizard
software. The baud rate and channel number for the
transmitter should always match the receiver settings,
otherwise the two modules will not communicate.

Mounting Bracket & Installation

The wireless transmitter/receiver can be mounted
using the optional mounting bracket. In order to
assemble the mounting bracket to the module, the two
case module screws are used.

General Dimensions - Mounting Bracket

Transmitter Mounting Bracket Assembly

Transmitter Bracket With 1/4-20 Mounting Screw For

Tripod Mount

Transmitter Bracket With DIN Rail Mount Assembly

When mounting your wireless transmitter, care
should be taken to make sure it is as far away from
any metal objects. Otherwise, it has the potential to
interfere with the way the unit radiates and may
cause signal loss or possibly even the inability to
communicate at all with your receiver.

–

+

DC POWER

INPUT
9V
100 MA

WRS232

UNIVERSAL
WIRELESS

RS232

TRANSMITTER

RS232
PORT

SAVE

POWER

SAVE

POWER

20.3

(0.80)

69.9

(2.75)

50.8

(2.00)

SLIDE SWITCH

STANDARD

POWER

STANDARD

POWER

CONFIG

NORMAL

RX

TX

DC

ADAPTOR

INPUT

DIIMENSIONS: mm (in)

RS232
PORT

CONFIG

SLIDE

SWITCH

NORMAL

SW2

SW1

20.3

(0.80)

69.9

(2.75)

50.8

(2.00)

USB

PORT

RX
TX

WUSB

UNIVERSAL

WIRELESS

USB

RECEIVER

USB
PORT

DIIMENSIONS: mm (in)

C
L

L

C

88.9 (3.5)

25.4

(1.00)

54.0

(2.125)

2.29

(0.090)

34.9

(1.375)

81.3 (3.2)

63.5 (2.5)

50.8
(2.0)

LOCATION

OF CASE

MOUNTING

SCREWS

0.125 DIA.
2 PLCS.
MOUNTING
HOLES

DIMENSIONS: mm (in)

TWO MOUNTING
CASE SCREWS

TWO 4-40 MOUNTING

BRACKET SCREWS

WIRELESS TRANSMITTER/

RECEIVER

TWO MOUNTING

CASE SCREWS

1/4-20 FLAT HEAD SCREW

WASHER & HEX NUTS

WIRELESS TRANSMITTER/

RECEIVER

TWO MOUNTING
CASE SCREWS

FOUR #6 FLAT HEAD SELF TAP

MOUNTING SCREWS - DIN RAIL

WIRELESS TRANSMITTER/

RECEIVER

Connect to PC

Connect to Wireless
Receiver Module

NOTE: