LEGRAND WattStopper UT-300 Series Installation Instructions Manual page 9

Ultrasonic low voltage occupancy sensor
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LIGHT LEVEL FEATURE
The Light Level feature holds lights off upon initial occupancy if adequate ambient
light exists. It will not turn the lights off if they are on. The default setting is for
maximum, meaning that even the brightest ambient light will not hold the lights
off.
Notes on Functionality
Avoid mounting the sensor close to lighting fixtures
Adjust during daylight hours when ambient light in the area is at desired
level.
Light Level cannot be enabled while Test Mode is active. Either wait for
Test Mode to expire or select any of the other Time Delay settings before
enabling the Light Level feature.
Ultrasonic occupancy indicator LED is disabled when the Light Level
feature is enabled. LED will also flash periodically to indicate the sensor
has Light Level enabled.
Light Level settings are only saved in the event of a power loss. Disabling
Light Level and then reenabling it will not return it to previous settings.
If Test Mode is enabled after Light Level has been set, Light Level
functionality will cease to function throughout the duration of Test Mode.
When Test Mode period expires, the Light Level functionality will resume,
even if the Dip Switches remain set to Test Mode.
Setting Light Level
1.
Make sure Test Mode is not active.
2.
Toggle the state of the sensor, by briefly pressing the Light Level button,
to include or exclude the lighting load from the light level calibration.
Open the Front Cover and locate the LIght Level pusbbutton. See Sensor
Adjustment.
3.
Press and hold the Light Level button for 2 or more seconds, or until the
detection LED turns On. Do not exceed 5 seconds.* The sensor enters
setup mode, as indicated by the rapidly flashing LED. The LED will flash
throughout the setup process. Occupancy indications from the LED is
disabled during setup.
4.
Move away from the sensor to avoid interference with light level detection.
The sensor measures the light level for a 10 second period, then averages
the readings and automatically sets the level that will be used as the new
setting. The sensor will hold lights off when the ambient light exceeds this
setting.
Visit our website for FAQs: www.wattstopper.com

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