LEGRAND Wattstopper UT-355 Installation Instructions

No: 24778 – 02/17 rev. 1
Catalog Number • Numéro de Catalogue • Número de Catálogo: UT-355
Country of Origin: Made in China • Pays d'origine: Fabriqué en Chine • País de origen: Hecho en China
DESCRIPTION AND OPERATION
The Wattstopper UT-355 360° ultrasonic occupancy sensors operate
on 120VAC, 230VAC (1Ø), 277VAC, or 347VAC. The UT-355 turns
lighting systems on and off based on occupancy.
The sensors can be configured to turn lighting on, and hold it on as
long as it detects occupancy. After no movement is detected for the
user specified time (30 seconds to 30 minutes) the lights are switched
off. A "walk-through" mode can turn lights off after only 3 minutes, if no
activity is detected after 30 seconds of an occupancy detection.
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.
PLACEMENT GUIDELINES
Depending upon obstacles such as furniture or partitions, the area of
coverage may be less or more than the sensing distances shown in the
coverage pattern. This must be considered when planning the number
of sensors and their placement. 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. As a general rule, each occupant should be able to
clearly view the sensor.
Open Office Area Coverage: To get complete coverage in an open
office area, install multiple sensors so that there is approximately 20%
overlap with each adjacent sensor's ultrasonic coverage area.
Wattstopper
Ultrasonic Line Voltage Occupancy Sensor with Light Level (v3)
Installation Instructions • Instructions d'Installation • Instrucciones de Instalación
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-305-2 ........................................................up to 1000 ft
Model UT-305-3 ........................................................up to 2000 ft
Sensitivity Adjustment ..................Minimum to Maximum (trimpot)
Frequency ........................................................................... 40kHz
U.S. Patents: 7,277,012
16'
12'
Drawings not to scale.
12'
16'
23'
®

SPECIFICATIONS

45' 23' 16' 12' 0'
23'
5'
0'
5'
12' 16' 23' 45'
UT-355-3
UT-355-2
UT-355-1
UT-355-3
HALLWAY
APPLICATION
2
2
2