Cut Sheet

2
Technical Data
November 2014
OAC-U – MicroSet Ultrasonic Low Voltage Ceiling Sensor
www.coopercontrol.com
Specifications
Technology
Ultrasonic (US)
Power
Requirements
Input
10-30 VDC from Greengate Switchpack or
Greengate system
Maximum current needed is 25mA per sensor
Output
Open collector output to switch up to ten
Greengate Switchpacks
BAS with Isolated Form C Relay in (-R) model
Isolated Form C Relay Ratings: 1A 30 VDC/VAC
Time Delays
Self-adjustable, 15 seconds/test (10 minutes Auto),
or Selectable 5, 15, 30 minutes, or Zero Time
Delay
Coverage
500, 1000, and 2000 sq. ft. (56 ft. x 16 ft. corridor)
Light Level
Sensing
(-R Models)
0 to 300 foot-candles
Operating
Environment
Temperature: 32°F - 104°F (0°C - 40°C)
Relative humidity: 20% to 90%, non-condensing
For indoor use only
Housing
Durable, injection molded housing. Polycarbonate
resin complies with UL 94V-0
Size
1.42”H x 4.5”W (36.068mm x 114.3mm)
Mounting
Mounts directly to ceiling tile, to a 4” square box
and round mud ring or to 4” octagon box
LED Indicators
Green LED for Ultrasonic detection
Standards
FCC Compliant
cULus Listed
RoHS Compliant
Description/Operation
The ultrasonic sensor uses the Doppler principle. It produces a low
intensity, inaudible sound and detects changes in sound waves
caused by motion, such as walking into the room, reaching for the
telephone, or turning in a chair. They are volumetric in nature and
therefore not line-of-sight dependant. Since they fill the space with
these sound waves, they are excellent in bathrooms with stalls,
enclosed hallways, or other oddly shaped rooms. In addition, they
are much more sensitive to smaller motions. The sensor includes
self-adaptive technology that continuously self-adjusts sensitivity and
Time Delay in real-time, maximizing the potential energy savings that
are available in the particular application. In Automatic On Mode, the
lights turn ON when a person enters the room. In Manual On Mode
(-R model only), the lights are turned ON by activating a momentary
switch (model # GMDS-*) that is connected to the sensor. The
MicroSet Ultrasonic Low Voltage Ceiling Sensor has an ambient
light level sensor. When enabled, the daylighting feature (-R models
only) prevents lights from turning ON when the room is adequately
illuminated by natural light.
Applications
Conference Rooms
Open Office Areas
Restrooms (With Partitions)
Restrooms (Non Partitioned)
Hallways
Other Indoor Office Spaces