LEGRAND WattStopper DW-100-24-LA User manual

Installation Instructions
SPECIFICATIONS
Voltage................................ 18-24VDC, 24VAC or Half-wave rectified AC
Current Consumption ................................................................... 35mA
Power Supply ............................................... WattStopper Power Packs
Isolated Relay Rating................................................... 1A @30VDC/VAC
Time Delay Adjustment................................................. 5 to 30 minutes
Walk-Through Mode ................. 3 minutes if no activity after 30 sec.
Test Mode........................ 5 sec. for 10 min. with DIP switch setting
PIR Adjustment.................................................. High or Low (DIP switch)
Ultrasonic Adjustment .................... Minimum to Maximum (trimpot), Off
Frequency................................................................................... 40kHz
Light Level Adjustment ........................................................ 8fc to 180+fc
Alerts............................................................................. Selectable Audible
US Patent: 6617560
DW-100-24
v3
Dual Technology Low Voltage
Wall Switch Occupancy Sensor
Santa Clara, CA 95050
800.879.8585

UNIT DESCRIPTION AND OPERATION
The DW-100-24 Dual Technology Low Voltage Wall Switch sensor combines
advanced passive infrared (PIR) and ultrasonic technologies into one unit.
The combined technologies help to eliminate false triggering even in difficult
applications.
Selectable operating modes allow the sensor to turn a load ON, and hold it ON
as long as either or both technologies detect occupancy. After no movement is
detected for the selected time delay, the lights switch off. A “walk-through” mode
can turn lights off after only 3 minutes, if no activity is detected after 30 seconds
following an occupancy detection.
The DW-100-24 has one relay and one ON/OFF button. Pressing the button
toggles the state of the relay.
The DW-100-24 also contains a light level sensor. If adequate daylight is present,
the sensor holds the load OFF until light levels drop, even if the area is occupied.
Users can override this function by pressing the ON/OFF button. See Light Level
Adjustment.
Turning ON the Load (ON Mode)
The DW-100-24 can be programmed for either Auto ON or Manual ON mode. In
either mode, the load can be turned ON or OFF using the ON/OFF button.
Manual ON
DIP 8 ON
With the ON Mode DIP switch in the ON position, the occupant must
press the ON/OFF button to turn ON the load. The sensor keeps
the load ON until no motion is detected for the selected time delay.
There is a 30 second re-trigger delay. If occupancy is detected
during the delay, the sensor turns the load back ON. After the re-
trigger delay elapses the ON/OFF button must be pressed to turn
ON the load.
Presentation Mode is a feature of the Auto ON mode. When the relay is
manually turned OFF the DW holds the lights OFF until no motion has been
detected for the duration of the Time Delay. With subsequent occupancy, the DW
turns the load ON.
Auto ON
DIP 8 OFF
With the ON Mode DIP switch in the OFF position, the load turns ON
and OFF automatically based on occupancy. If the load is turned
OFF manually, Presentation Mode operation applies. This prevents
the load from turning ON automatically after it was deliberately
turned OFF. Pressing the button to turn lights ON returns the
sensor to Auto ON mode.
Shading indicates default operation and switch setting.
Call 800.879.8585 for Technical Support

Visit our website for FAQs: www.wattstopper.com
Alerts
The DW can provide audible alerts as a warning before the load turns OFF.
High (DIP #4 OFF)Default setting. Suitable for most applications.
PIR Sensitivity Adjustment
The DW-100-24 constantly monitors the controlled environment and
automatically adjusts the PIR to avoid common ambient conditions that can
cause false detections, while providing maximum coverage.
Time Delay (15 min.
DIP 1 ON & 2 OFF)
Time delays of 5, 15 (default), or 30 minutes are
available. See DIP SWITCH SETTINGS for information.
Test/20 min
(DIP 1 & 2 OFF)
A Test Mode with a short time delay of five seconds
is set when DIP switches 1 & 2 are OFF. It cancels
automatically after ten minutes, or when you set a
fixed time delay. When the Test Mode times out, the
sensor will assume a 20 minute time delay. To restart
Test Mode, change the time delay setting to any fixed
amount and then return it to the Test setting.
Reduces sensitivity by approximately 50%. Useful in
cases where the PIR is detecting movement outside of
the desired area (also consider masking the lens) and
where heat sources cause unnecessary activation.
Low, 50%
(DIP #4 ON)
Unit will beep at one minute, at 30 seconds and at 10
seconds before turning OFF load. When Walk-Through
is active, the unit beeps three times at 10 seconds
before the load goes OFF.
Audible Alerts
(DIP #7 ON)
No Alerts No warnings provided.
Walk-Through
The Walk-Through mode shortens the time delay to reduce the amount of
time the load is ON after a brief moment of occupancy, such as returning to an
office to pick up a forgotten item then immediately exiting.
Walk-Through
Mode
(DIP #3 ON)
The DW sensor turns the load OFF 3 minutes after the
area is initially occupied, if no motion is detected after
the first 30 seconds. If motion continues beyond the
first 30 seconds, the set time delay applies.
No Walk-Through
(DIP #3 OFF)
Walk-Through mode disabled.
Time Delays
The DW-100-24 holds the load ON until no motion is detected for the selected
time delay. Select the time delay using DIP switch settings. In the DW-200, both
relays use the same delay.

COVERAGE PATTERNS
Coverage testing has been
performed according to the
NEMA WD 7 guideline. For best
performance, use in spaces not
larger than 18’ x 15’.
PIR Sensor
The sensor has a two-tiered,
multi-cell viewing Fresnel lens
with 180 degree field of view. The
red LED on the sensor flashes
when the PIR detects motion.
Masking the lens
Opaque adhesive tape is supplied
so that sections of the PIR sensor’s
view can be masked. You can
eliminate coverage in unwanted
areas. Since masking removes
bands of coverage, take this into
account when troubleshooting
coverage problems.
Ultrasonic Sensor
The sensor has two ultrasonic transceivers operating at 40kHz. Detection
sensitivity can be adjusted using the trimpot under the ON/OFF buttons.
Trigger Mode
The DW sensor has four occupancy trigger options, set with DIP switches 5 and
6. Determine the appropriate option using the Trigger matrix.
In the Trigger Mode DIP switch setting table, in order to deem the area occupied:
• Both requires motion detection by the PIR
and the Ultrasonic.
• Either requires motion detection by only
one technology.
• PIR requires motion detection by the PIR.
Initial Occupancy: The method that activates a
change from “Standby” (area unoccupied and
load off) to “Occupied” (area occupied and load
may turn ON).
Maintain Occupancy: The method indicating that the area is still occupied and
the lights should remain ON.
Re-trigger: In Auto On Mode, after the load turns off, detection by the selected
technology within the number of seconds indicated turns the lights back ON. If
the load was turned ON with the ON/OFF button, the re-trigger time is 30 seconds.
Call 800.879.8585 for Technical Support
=ON =OFF
56
Trigger
Mode
Initial
Occupancy
Maintain
Occupancy
Re-trigger
(seconds
duration)
Option C
Both Both Both (5)
Standard
Both Either(5)Either
Option A
Either Either(5)PIR
Option B
PIR PIR PIR (5)
DIP
Switch
PIR
Coverage
7.5’
(2.2m)
15’
(4.5m)
20’
(6.1m)
35’
(10.6m)
Major motion
Minor motion
Ultrasonic
Coverage
10'
(3.0m)
7.5’
(2.2m)
20’
(6.1m)
15’
(4.5m)
Major motion
Minor motion
4’
(1.2m
)
20’
(6.1m)
35’
(10.6m)
0
Top View
Side View

1. Install the power pack according to its instructions.
2. Connect the power pack wires to the sensor as follows:
RED wire (+24VDC) to the +24V IN terminal on the sensor.
BLACK wire (Return) to common (COMM.) terminal on the sensor.
BLUE wire to control output (CTRL. OUT) terminal on the sensor.
3. Wire the Isolated Relay. The Isolated Relay is rated for 1A @ 30VAC/VDC.
Connect the wires necessary to the application that requires this output:
• Normally Closed (N.C.) - Open when occupancy is detected.
• Relay Common (must be used for proper operation)
• Normally Open (N.O.) - Closed when occupancy is detected.
The bottom terminal on the sensor is not used.
4. Turn the power on.
5. Test and adjust the sensor if necessary.
6. Install industry standard decorator wall switch cover plate (not
included).
INSTALLATION
Common
White (Neutral)
Red
(Load)
Red (Line)
White
Black
Hot
Neutral Power
Pack
Blue
Black
Red
Lighting
Load
Control Outputs
+24 VDC
Isolated Relay Outputs
Normally closed contact
Common
Normally open contact
Not used
WARNING
TURN THE POWER OFF AT THE CIRCUIT BREAKER BEFORE
INSTALLING THE SENSOR OR WORKING ON THE LOAD.
Visit our website for FAQs: www.wattstopper.com
D-100-24 Wiring

ON/OFF Button
DIP SWITCH SETTINGS
Button
Hinges
Tabs
=ON =OFF
=Factory Setting
8
Auto On
Manual On
ON Mode
7
Disabled
Enabled
Audible Alert
4
High
Low, 50%
PIR Sensitivty
912345678
Time
Delay
Walk-Through
ON
ON Mode
Not Used
Audible Alerts
PIR Sensitivity
Switch 9 is not used
56
Trigger
Mode
Initial
Occupancy
Maintain
Occupancy
Re-trigger
(seconds
duration)
Option C
Both Both Both
Standard
Both Either(5)Either
Option A
Either Either(5)PIR
Option B
PIR PIR PIR
Test/20 min
5 minutes
12
Time Delay
15 minutes
30 minutes
3
Disabled
Enabled
Walk-Through
Trigger
Mode
DIP Switches
PIR Lens
Detection LEDs
Red = PIR
Green = Ultrasonic
Ultrasonic Cones
Ultrasonic Sensitivity
Adjustment Trimpot
Call 800.879.8585 for Technical Support

ADJUSTMENTS
Sensor Adjustment
Remove the wall plate. Remove the button cap by firmly squeezing together the
top sides of the button assembly. Gently pull it away from the unit.
When the adjustments are completed, replace the button cap by inserting its
hinges into the tabs on the main unit and then squeeze the top of the button
while pressing it into the unit. Reinstall the cover plate.
Light Level Adjustment
The light level can be set with loads ON or OFF. To enable light level control and
set the threshold:
1. Make sure the room is lit appropriately.
2. Put the sensor into TEST mode. You have 5 minutes to complete the
procedure.
3. Press and hold the ON/OFF button for 3seconds, until you hear a beep.
4. Step away from the sensor. After 25 seconds a beep sounds, indicating that
the threshold level is set. This threshold is retained, even if power is lost, until
it is re-set or disabled.
To disable light level control, press and hold the ON/OFF button for 7seconds,
until a double beep tone sounds.
Reset to Default
Use the DIP Switch Settings tables on the previous page to return features
to factory settings. To reset the DW press and hold the ON/OFF button for 10
seconds, until a triple beep sounds. This resets the sensor and disables light
level control (the brightest ambient light will not hold the light OFF).
Service Mode
To enter service mode set the ultrasonic trimpot to MIN (Fully counter-clockwise).
TROUBLESHOOTING
Lights do not turn ON with motion (LED does flash)
1. Press and release each button to make sure that the correct lights come
ON. If the lights do NOT turn ON, check wire connections, especially the
Load connection. If the lights turn ON, verify that the correct On Mode is
selected in DIP switches 8 and 9.
2. Check to see if light level control is enabled: cover the sensor lens with
your hand. If the lights come ON, adjust the light level setting.
3. If lights still do not turn ON, call 800.879.8585 for technical support.
Lights do not turn ON with motion (LED does not flash)
1. Press and release each button. Make sure that the correct lights come ON. If
the lights turn ON, set PIR and Ultrasoic Sensitivity to High.
Visit our website for FAQs: www.wattstopper.com

WARRANTY INFORMATION
WattStopper warranties its products to be free of defects in materials and
workmanship for a period of five years. There are no obligations or liabilities on the
part of WattStopper for consequential damages arising out of or in connection with
the use or performance of this product or other indirect damages with respect to
loss of property, revenue, or profit, or cost of removal, installation or reinstallation.
2. Check the wire connections, in particular, the Neutral and Line
connections. Verify that connections are tightly secured.
3. If lights still do not turn ON, call 800.879.8585 for technical support.
Lights do not turn OFF
1. There can be up to a 30 minute time delay after the last motion is detected.
To verify proper operation, set DIP switch 1 to ON, then reset switches 1
and 2 to OFF to start Test Mode. Move out of view of the sensor. The lights
should turn OFF in approximately 5 seconds.
2. Verify that the sensor is mounted at least six feet (2 meters) away from any
heating/ventilating/air conditioning device that may cause false detection.
Verify that there is no significant heat source (e.g., high wattage light bulb)
mounted near the sensor.
3. Verify that the trimpot is not pointing at “Service” (red LED ON). If so, rotate the
trimpot to it’s middle setting (pointing up). The Service setting allows users to
operate the sensor as a service switch in the unlikely event of a failure.
4. If the lights still do not turn OFF, call 800.879.8585 for technical support.
Sensing motion outside desired areas
1. Select PIR Sensitivity — Low (DIP switch 4 = ON) if necessary.
2. Mask the PIR sensor’s lens to eliminate unwanted coverage area.
3. Adjust the Ultrasonic Sensitivity. Rotate trimpot counterclockwise to reduce
sensitivity.
Red LED is lit all the time and the sensor features don’t work.
1. Check the Ultrasonic trimpot. If it is set at fully counter-clockwise (MIN) the
unit is in Service Mode. Set the trimpot to a mid-range position.
2. If resetting the trimpot does not clear the LED call technical support.
COVER PLATES
WattStopper DW series wall switches fit behind industry standard decorator-style
switch cover plates. Cover plates are not included.
Units come in the following colors, which are indicated by the final suffix of the
catalog number (shown here in parentheses):
White (-W), Light Almond (-LA), Ivory (-I), Grey (-G), Black (-B).
2800 De La Cruz Boulevard, Santa Clara, CA 95050
800.879.8585 • www.wattstopper.com
07171r3 1/2015