Unit Description And Operation - LEGRAND WattStopper UW-100 Installation Instructions Manual

UNIT DESCRIPTION AND OPERATION

The UW Ultrasonic Wall Switch sensors employ 40kHz ultrasonic technology
in a single-gang wall switch unit. The UW sensor can turn a load ON, and hold
it ON as long as the sensor detects 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 UW-100 has one relay and one ON/OFF button. The UW-200 contains
two relays and two ON/OFF buttons to allow control of one or two loads
independently. Pressing a button toggles the state of the corresponding relay.
UW sensors contain 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. In
the UW-200, light level only affects the load on Relay 2. Users can overrule this
function by pressing the ON/OFF button. See Light Level Adjustment.
Turning The Load ON (ON Mode)
The relays are programmed independently for either Auto ON or Manual ON. In
either mode, the load can be turned ON or OFF using the ON/OFF button.
With an ON Mode DIP switch in the ON position, the occupant
Manual ON
must press the ON/OFF button to turn ON the load. The sensor
DIP 7 ON
keeps the load ON until no motion is detected for the selected
for Relay 1
time delay. There is a 30 second re-retrigger delay. If occupancy
is detected during the delay, the sensor turns the load back ON.
DIP 8** ON
After the re-trigger delay elapses the ON/OFF button must be
for Relay 2
pressed to turn ON the load.
With an ON Mode DIP switch in the OFF position, the load turns
Auto ON
ON and OFF automatically based on occupancy. If the load is
DIP 7 OFF for
turned OFF manually, Presentation Mode operation applies. This
Relay 1
prevents the load from turning ON automatically after it was
deliberately turned OFF. Pressing the button to turn lights ON
DIP 8** OFF
returns the sensor to Auto ON mode.
for Relay 2
**
UW-100: Switch 8 is not used. UW-200: Switch 8 default is ON to comply
with CA Energy Commission Title 24 bi-level switching requirements.
Model #
UW-100
UW-100-347
UW-200
Shading indicates default operation and switch setting.
Relay Default ON Mode
1 Manual ON
1 Manual ON
1 Auto ON
2 Manual ON
DIP switch #
7
7
7
8
Setting
ON
ON
OFF
ON