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OCCUPANT SENSOR
LOS-W SERIES
Installation Instructions

Please Read

DESCRIPTION
The LOS-W Series of wall-mounted sensors incorporate infrared (WIR) and dual technologies--ultrasonic
and infrared (WDT). They are used in spaces with pendant fixtures, ceiling fans, or high ceilings. They inte-
grate into Lutron systems or function as stand-alone controls using a Lutron power pack.

FEATURES

• Intelligent, continually adapting sensors
• 20-24 V    , Class 2 (PELV) low voltage, 33 mA nominal
• 1600 sq.ft. coverage
• Flexible mounting on wall or ceiling
• Second dry contact closure output available on R models
• LED indicators: Ultrasonic (US)-green, Infrared (IR)-red
• For indoor use only

COVERAGE AND PLACEMENT

• The occupant sensor must have an unobstructed view of the room entrance. Do not mount behind or near

tall cabinets, shelves, indirect hanging fixtures, etc.

• Keep the occupant sensor away from air flow.
• Place the sensor on the same wall as the doorway so that hallway traffic will not affect the sensor.
• Closely follow the diagrams for major and minor motion coverage.
• Decrease total coverage area by 15% for “soft” rooms (for example, heavy draperies or heavy carpeting).
• Indicated coverage is when sensor is mounted at 8 ft. high.

Model

US Minor Dims.

US Major Dims.

IR Minor

IR Major

WIR

NA

NA

20 (6.1)

40 (12.2)

WDT

23 x 23 (7.0 x 7.0)

32 x 32 (9.8 x 9.8)

20 (6.1)

40 (12.2)

WDT-R

23 x 23 (7.0 x 7.0)

32 x 32 (9.8 x 9.8)

20 (6.1)

40 (12.2)

US

Minor

Motion

IR Minor Motion

Motion Detection Ranges

Dimensions and Ranges are in feet (m).

US Major Motion

US Minor Motion

IR Major Motion

US

Major

Motion

LOS-WIR
LOS-WDT
LOS-WDT-R
Class 2 (PELV) Devices

English

R

LIMITED WARRANTY

Lutron will, at its option, repair or replace any unit that is defective in materials or manufacture within one year after
purchase. For warranty service, return unit to place of purchase or mail to Lutron at 7200 Suter Rd., Coopersburg, PA
18036-1299, postage pre-paid.

This warranty is in lieu of all other express warranties, and the implied warranty of merchantability is limited to one year
from purchase. This warranty does not cover the cost of installation, removal or reinstallation, or damage resulting
from misuse, abuse, or improper or incorrect repair, or damage from improper wiring or installation. This warranty
does not cover incidental or consequential damages. Lutron’s liability on any claim for damages arising out of or in
connection with the manufacture, sale, installation, delivery, or use of the unit shall never exceed the purchase price of
the unit.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Some
states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or
exclusion may not apply to you.
Lutron and the sunburst logo are registered trademarks of Lutron Electronics Co., Inc. © 2005.

World Headquarters

Lutron Electronics Co., Inc.
7200 Suter Road 
Coopersburg, PA 18036

TEL +1-610-282-3800
FAX +1-610-282-1243

Internet: www.lutron.com
E-mail: [email protected]

Lutron Electronics Co., Inc.
Made and printed in U.S.A. 
P/N 031-259 Rev. A 6/05

Single Sensor to System

2 or More Sensors to System

Lighting

control

system

Red (+20-24 V    )

Blue (signal)

Black (common)

Red (+20-24 V    )

Blue (signal)

Black (common)

Lighting

control

system

To additional sensors, maximum
determined by lighting controller

120/277/347 V      60 Hz;

230 V      50/60 Hz

Neutral

Power Pack

Manual switch
off (optional)

Load

Note: Maximum 3 occupant sensors.

Red (+20-24 V    )

Blue (signal)

Black 
(common)

Black

White

Red

Red

1 to 3 Sensors with Power Pack

Switching Multiple Loads with Auxiliary Power Packs

Hot

Manual switch off (optional)

Load

Load

Power Pack

Auxiliary

Power Pack

Red

Red

Red (+20-24 V    )

Black
(common)

Note: Maximum of 3 devices total 
(occupant sensors and auxiliary power packs) can be connected to a power pack.

Neutral

Hot

Blue (signal)

Black

White

Red

Red

TROUBLESHOOTING

Problem

Possible Cause

Test

Result

Lights stay on

Constant noise

Reduce red knob by 15%; 

Move sensor

remove noise source

Lights on too long

Timer setting too high

Check switch settings

Typical setting is 8 min.

Hallway traffic 

Infrared sensor 

Put in timer test mode; 

Move sensor

turns lights on

“sees” into hallway

walk along hallway

Sensor not responding

Unit is locked up

--

Cycle power to sensor

WIRING DIAGRAMS (continued)

R

120/277/
347 V
60 Hz;
230 V
50/60 Hz

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