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SPECIFICATIONS
Voltages ............................................. 120//230/277/347VAC, 50/60Hz
Load Ratings
@120VAC .........................................0-800W Ballast/Tungsten/LED
@230VAC (Single Phase).............................. 0-1200W Ballast/LED
@277VAC ....................................................... 0-1200W Ballast/LED
@347VAC ...................................................... 0-1500W Ballast/LED
Operating Temperature ................................ 32° to 131°F (0° to 55°C)
Light Level One-Step Adjustment...................................10FC - 300FC
Time Delay Adjustment ............................... 30 seconds to 30 minutes
Walk-Through Mode ..............3 minutes if no activity after 30 sec.
Test Mode .......................................... 5 sec. upon DIP switch reset
Ultrasonic Coverage
Model UT-355-1 ........................................................... up to 500 ft
Model UT-355-2 ......................................................... up to 1000 ft
Model UT-355-3 ......................................................... up to 2000 ft
Sensitivity Adjustment ................ Minimum to Maximum (trimpot)
Frequency ............................................................................. 40kHz
UT-355
Ultrasonic • Line Voltage
Occupancy Sensor
US Patents: 7,277,012
Santa Clara, CA 95050
with Light Level
2
2
2
v3
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Related Manuals for Watt Stopper UT-355
Summary of Contents for Watt Stopper UT-355
- Page 1 Walk-Through Mode ....3 minutes if no activity after 30 sec. Test Mode .......... 5 sec. upon DIP switch reset Ultrasonic Coverage Model UT-355-1 ............up to 500 ft Model UT-355-2 ............up to 1000 ft Model UT-355-3 ............up to 2000 ft Sensitivity Adjustment ....
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Page 2: Unit Description
COVERAGE PATTERN The UT-355 is available in 3 models. Each model has a different size coverage pattern. The coverage shown represents walking motion at a mounting height of 8 to 10 feet. For building spaces with lower levels of activity or with obstacles and barriers, coverage size may decrease. -
Page 3: Placement Guidelines
It is also recommended to place the sensor 4 to 6 feet away from air supply ducts. Mount the sensor to the ceiling. The UT-355 is designed for a ceiling height of about 8-10 feet. Mounting above or below this range will significantly affect the coverage patterns. -
Page 4: Wiring Directions
WIRING DIRECTIONS CAUTION TURN POWER OFF AT THE CIRCUIT BREAKER BEFORE INSTALLING SENSORS.. #12 to #16 AWG Neutral CAUTION Load Strip Gauge TURN POWER OFF AT THE CIRCUIT BREAKER Cu Wire Only Switch Load BEFORE INSTALLING SENSORS. Ground Neutral (Optional) Single Sensor, Single Load Neutral Load... -
Page 5: Mounting The Sensor
MOUNTING THE SENSOR Using a 4-Inch Square Junction 4" Square, 2.25" Deep Junction Box with Box with Double-Gang Mudring Double Gang Mudring attached 1. Pull the high voltage wires into Drop Ceiling the J-Box through the conduit knockout. CA-1 Adapter 2. -
Page 6: Sensor Adjustment
SENSOR ADJUSTMENT This unit is pre-set for basic operation as described in this guide. Adjustment is optional. The sensors are factory preset to allow for quick installation in most applications. Verification of proper wiring or coverage, or customizing the sensor’s settings can be done using the following procedures. - Page 7 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.
- Page 8 5. When the LED stops flashing, replace the Front Cover. *Disabling Light Level Pressing the pushbutton for 5 seconds or more resets the light to default (maxi- mum). Press and hold the Light Level button over 5s (the green LED will be ON and then OFF).
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Page 9: Dip Switch Setting
DIP SWITCH SETTING Feature Switch# 1 2 3 Time Delay The UT-355 has 5 DIP switches under the cover. Test Mode/20 min 30 seconds Time Delay: Switches 1, 2, 3 5 minutes 10 minutes The sensor will hold the lights ON as long as 15 minutes occupancy is detected. -
Page 10: Troubleshooting
TROUBLESHOOTING CAUTIONTurn power off at the cir CAUTION TURN POWER OFF AT THE CIRCUIT BREAKER BEFORE WORKING WITH OR NEAR HIGH VOLTAGE. For any unexpected operation 1. Check DIP switch settings. 2. Make sure the switches are set according to the defined settings in the DIP Switch Setting chart. - Page 11 3. Check if Light Level is enabled. • If occupancy indicator LED blinks every few seconds, sensor is using Light Level feature. • If Light Level functionality is not desired, press and hold for 5 seconds to return sensor to the default setting (maximum). www.wattstopper.com...
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Page 12: Ordering Information
ORDERING INFORMATION Catalog # Description UT-355-1 Ultrasonic Occupancy Sensor, Line Voltage, up to 500 sq ft coverage UT-355-2 Ultrasonic Occupancy Sensor, Line Voltage, up to 1000 sq ft coverage UT-355-3 Ultrasonic Occupancy Sensor, Line Voltage, up to 2000 sq ft coverage CA-1 Cosmetic adapter for ceiling installation with 4”...
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