
2 RS409 Ring Scanner
© 2006 SYMBOL TECHNOLOGIES, INC. All rights reserved.
Symbol reserves the right to make changes to any product to improve reliability, function,
or design.
Symbol does not assume any product liability arising out of, or in connection with, the
application or use of any product, circuit, or application described herein.
No license is granted, either expressly or by implication, estoppel, or ot herwise under any
patent right or patent, covering or relating to any combination, system, apparatus,
machine, material, method, or process in which Symbol products might be used. An
implied license exists only for equipment, circuits, and subsystems contained in Symbol
products.
Symbol and the Symbol logo are registered trademarks of Symbol Technologies, Inc. Oth er
product names mentioned in this manual may be trademarks or registered trademarks of
their respective companies and are hereby acknowledged.
Symbol Technologies, Inc.
One Symbol Plaza
Holtsville, N.Y. 11742-1300
http://www.symbol.com
Warranty
Subject to the terms of Symbol’s hardware warranty statement, the RS409 scanner, with
the exception of the finger strap assembly , is warranted against defect in workmanship and
materials for a period of twelve months from the date of shipment. For the complete
Symbol hardware product warranty statement, go to: http://www.symbol.com/warranty
.
Patents
This product is covered by one or more of the patents listed on the website:
http://www.symbol.com/patents
.

Quick Reference Guide 3
Introduction
The RS409 ring scanner is a modular, wearable laser scanner that allows the
operator hands-free bar code scanning capability. The scanner is used with the
WT4070/90 wearable terminal.
The RS409 is worn on the operator’s index finger, and utilizes a
thumb-operated trigger. The RS409 connects via an interface cable to the
wearable terminal, which provides power and performs the data collection
functions. The RS409 is available in two configurations; a short cable version
for connection to a wrist mounted wearable terminal, and a long cable version
for connection to a hip mounted wearable terminal.
Connector
Finger Strap
Assembly
Scan Assembly
Scan Trigger
Scan LEDExit Window
Trigger
Assembly

4 RS409 Ring Scanner
Changing Trigger Position
The trigger assembly of the RS409 rotates to provide left-hand or right-hand
use.
1. Determine whether the RS409 is used on the right or left hand.
CAUTION The trigger assembly only rotates 180° around the back of the scan
2. Rotate the trigger assembly so that the scan trigger is positioned next to the
thumb when the RS409 is placed on the index finger.
assembly. Do not rotate the trigger assembly past the designed stops.

Quick Reference Guide 5
Installation
The RS409 connects to the wearable terminal and mounts on the index finger.
1. On the wearable terminal, remove the connector cap.
2. Connect the RS409 interface cable to the wearable terminal interface
connector. If connecting to a wrist mounted wearable terminal, connect to
the interface connector closest to the wrist.
Scanner Cable Connector
3. Slide the RS409 onto the index finger with the scan trigger next to the
thumb.
4. Tighten the finger strap.
Interface Connector