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OCCUPANT SENSOR
LOS-C SERIES
Installation Instructions

Please Read

DESCRIPTION
The LOS-C Series of ceiling-mounted sensors incorporate ultrasonics (CUS), infrared (CIR), and dual technologies
(CDT). They integrate into Lutron systems or function as stand-alone controls using a Lutron power pack.

FEATURES

• Intelligent, continually adapting sensors
• 20-24V    , Class 2 (PELV) low voltage, 33 mA nominal
• 450 to 2000 sq.ft. coverage, as indicated in model number (when mounted on 8 ft. ceiling)
• Second dry contact closure available on R models
• LED indicators: Ultrasonic (US)-green, Infrared (IR)-red, Dual Tech (DT)-red and green
• For indoor use only

COVERAGE AND PLACEMENT

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

shelves, hanging fixtures, etc.

• Keep the occupant sensor away from air flow.
• If installing a 180° occupant sensor, place the sensor on the same wall as the doorway so that hallway traffic will not

affect the sensor; otherwise, place in center of room.

• 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 range is when unit is mounted on an 8 ft. ceiling.

Model

US Minor Dims.

US Major Dims.

IR Minor

IR Major

CUS-500*

16 x 16 (4.9 x 4.9)

22 x 22 (6.7 x 6.7)

NA

NA

CUS-1000*

23 x 23 (7.0 x 7.0)

32 x 32 (9.8 x 9.8)

NA

NA

CUS-2000**

23 x 45 (7.0 x 13.7)

32 x 64 (9.8 x 19.5)

NA

NA

CIR-450**

NA

NA

6.5 (1.9)

12 (3.7)

CIR-1500**

NA

NA

12 (3.7)

22 (6.7)

CDT-500*

23 x 16 (7.0 x 4.9)

32 x 22 (9.8 x 6.7)

12 (3.7)

22 (6.7)

CDT-1000*

23 x 23 (7.0 x 7.0)

32 x 32 (9.8 x 9.8)

12 (3.7)

22 (6.7)

CDT-2000**

23 x 45 (7.0 x 13.7)

32 x 64 (9.8 x 19.5)

12 (3.7)

22 (6.7)

*180° field of view
**360° field of view

US Major Motion

US Minor Motion

US

Minor

Motion

US

Major

Motion

IR Minor Motion

IR Major Motion

Motion Detection Ranges

Dimensions and Ranges are in feet (m).

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

WIRING DIAGRAMS (continued)

LOS-CUS-500/1000/2000
LOS-CIR-450/1500
LOS-CDT-500/500R/1000/1000R/2000/2000R
Class 2 (PELV) Devices

English

Espanol

Francais

Portugues

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 031-260 Rev. A 6/05

TROUBLESHOOTING

Problem

Possible Cause

Test

Result

Lights stay on

Air conditioning

Reduce both green and  

Move sensor; temporarily

interference

red knob by 15%

reduce sensitivity

Lights on too long

Timer setting too high

Check switch settings

Typical setting is 8 min.

Hallway traffic 

Sensor “sees” 

Put in timer test mode; 

Move sensor

turns lights on

into hallway

walk along hallway

Sensor not responding

Unit is locked up

--

Cycle power to sensor

R

R

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

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