The WD-270 and WD-280 are dimmable passive infrared wall switches that turn lighting systems on and off based on occupancy in the controlled area. A dimming slider adjusts the light level from minimum to maximum.
The WD-270 and WD-280 have a dim-before-disconnect feature. The switches work with the Advance® Mark X™or Philips Ecotron® electronic dimming ballasts (ballasts that have line voltage forward phase-cut dimming control). The WD-270 also works with incandescent fixtures. The sensors feature a hard, vandal resistant lens which allows them to be used in a wide range of applications, including public spaces.
The WD-270 and WD-280 sensors turn lights on when a person enters the controlled area. Lights turn on to the level set with the dimming slider. The dimming slider does not turn the lights off, it allows users to increase or decrease the light level. The lights remain on while the space is occupied. Once the space is vacated, there is a 15 minute fixed time delay, after which the lights dim to the minimum light level. Then, after a secondary adjustable time delay of 5 to 60 minutes (set during installation) elapses, lights turn off. The lights can be manually turned off at any time by pressing the Auto/Off button.
Voltage:
WD-270 . . . . . . . . . . . . . . . . . . . . . . . 120VAC, 60Hz
WD-280 . . . . . . . . . . . . . . . . . . . . . . . 277VAC, 60Hz
Load Rating:
@120VAC. . . . . . 10–500W ballast or incandescent load
@277VAC . . . . . . . . . . . . . . . . 10–500W ballast load
Tungsten: . . . . . . . . . . . . . . . . Dims incandescent lamps
Ballasts: . . . . . . . . . . . . . . Use with Advance® Mark X™ or Philips Ecotron® electronic dimming ballasts (line voltage forward phase-cut dimming ballasts)
Dimmer Adjustment: . . . . . . . . . . . . . . . . . 5%–100%
Primary Time Delay: to lights dimmed. . 15 min. (fixed)
Secondary Time Delay: to lights off . . 5–60 min. (adjustable)