WATTSTOPPER UT-355-3

Description

WATTSTOPPER / LEGRAND
UT-355-3
Line voltage Ultrasonic Ceiling Sensor
120/230 (1Ø)/ 277/347
Description:
Wattstopper’s low-profile UT-355 Ultrasonic Line Voltage
Ceiling Sensor automatically turns lighting on and off based
on occupancy. The sensor mounts on the ceiling with a
unobtrusive appearance and provides 360° coverage.
Operation:
The UT-355 is line voltage and operates on a single phase
at 120, 230, 277, or 347 VAC. It uses high frequency (40 KHz)
ultrasound to sense occupancy and automatically turn lighting
on. When no occupancy is detected for the length of the time
delay, lighting automatically turns off.
Time Delay Options:
The UT-355 is factory set for a 20 minute time delay, ideal for
both energy savings and user satisfaction in most applications.
Installers can quickly select other fixed time delays (5, 10, 15
or 30 minutes) via DIP switches. Fixed time delays eliminate
the occupant dissatisfaction associated with an automatically
adjusted time delay option, and reduce callbacks. Walk-through
mode may be enabled for added energy savings in spaces with
frequent transient traffic.
Applications:
UT sensors offer excellent control of lighting for many spaces,
including restrooms and large offices. The UT sensors’
performance and ease of installation will provide fast paybacks
and many years of energy savings.
Features:
• Advanced control logic based on RISC microcontroller
provides:
– Advanced Signal Processing to eliminate false triggers and
provide immunity to RFI and EMI
– Walk-through Mode to turn lights off three minutes after
the area is initially occupied, ideal for brief visits such as
mail delivery
• Zero-crossing for long relay life
• LED indicates occupancy detection
• Coverage 500-2,000 square feet
• DIP switch simplifies sensor adjustments
• Patented ultrasonic diffusion technology spreads coverage to
a wider area
• Clip mounting system makes ceiling tile installation simple
• Terminal wiring system provides quick and easy installation
• Sensor coverage tested to NEMA Guide Publication WD 7-2000