Watt Stopper/Legrand WD-280 Dimmable Passive Infrared (PIR) Universal Wall Switch Sensor

ASIC technology reduces components and
enhances reliability
• Pulse Count Processing eliminates false offs
without reducing sensitivity
• Detection Signature Analysis eliminates false
triggers; provides immunity to RFI and EMI
• Hard lens makes the unit resistant to vandalism
• Zero Voltage Turn ON/OFF increases life of
sensor
The WD sensors are decorator style, dimmable
automatic wall switches. They replace standard
wall switches and work with fluorescent fixtures
using ballasts with line voltage phase control input
or Advance® Mark X™ electronic dimmable ballasts
as well as incandescent fixtures.
Dimming Feature
The WD’s slide dimmer adjusts the lighting from a
minimum of 10% to a maximum of 100%. The position
of the slide dimmer determines the light level
that turns on upon occupancy. The combination of
dimming and occupancy sensing provides a high
degree of energy savings, as well as enhanced
user control over the lighting environment.
Applications
The WD can be used in many spaces including
private offices, small conference rooms, and copy
rooms. Offices in public spaces can also use the
WD because of the vandal resistant hard lens. The
product’s flat, low-profile appearance adds to the
aesthetics in any location.
Operation
The WD sensors use passive infrared (PIR) technology
to turn lights on when the controlled space
is occupied. The WD-170 and WD-180 automatically
turn off once the space is vacated and the
user-adjustable time delay elapses. The WD-270
and WD-280 have a dim-before-disconnect feature
where once the space is vacated and the fixed 15
minute time delay elapses, lights dim to the
minimum level. Then, lights turn completely off
after a secondary, adjustable time delay. For all
models, lights can be turned off manually by
pressing the auto/off button.
Occupancy sensing
dimmable wall switch
Product Description
Overview
Features • Line voltage dimmable; does not require extra
control wiring to the ballast for the dimming
function
• Patented voltage drop protection
• For safety, there is no leakage to load in the off
mode and sensor is safety grounded
• LED indicates occupancy detection
WD-170, WD-270 operate at 120 VAC; WD-180, WD-280 operate at 277 VAC Maximum 300 ft2 (27.8 m2); 150 ft2 (13.9 m2) for desktop activity, 1.0 mm hard poly IR 2 lens, WD-170, WD-180: time delay adjustable during installation from 30 sec up to 30 min, WD-270, WD-280: fixed initial 15 min time delay after which lights will dim to minimum level; secondary adjustable time delay from 5 min to 30 min after which lights turn off, Dimensions: 2.7" x 1.8" x 2.2" (68.6mm x 45.7mm x 55.9mm) L x W x D, UL and CUL listed; 5 year warranty