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Occupancy/Vacancy Sensors, Wall Switch, Adaptive Dual Technology, 2 Circuit, 120/277V AC, Office White

By Hubbell Wiring Device-Kellems 

Catalog ID: ATU2000CL

By Hubbell Wiring Device-Kellems
Catalog ID:  ATU2000CL
Occupancy/Vacancy Sensors, Ceiling Switch Adaptive Dual Technology, 2 Circuit, 120/277V AC, Office White

Ultrasonic (US) technology senses occupancy by bouncing sound waves (32 kHz - 45 kHz) off of objects and detecting a frequency shift between the emitted and reflected sound waves. Movement by a person or object within a space causes a shift in frequency, which the sensor interprets as occupancy. While US occupancy sensors have a limited range, they are excellent at detecting even minor motion such as typing and filing, and they do not require an unobstructed line-of sight. This makes US technology sensors ideal for an application like an office with cubicles or a restroom with stalls.

  • Coverage 2000 sq. ft. (360°), line voltage sensor
  • Excellent minor motion detection
  • Self-contained power supply with high load relay
  • Directly mounts to 4" octagon boxes, 2.125" deep
  • Digital, crystal controlled ultrasonic transmitter and receiver for coverage in each direction for superior sensing of movement
  • Office White ABS enclosure blends with ceiling tile
  • Green LED indicates ultrasonic detection
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Product Details


Application Compatible with most LED and CFL
  • White
  • White
Humidity 0% to 95% non-condensing relative humidity
Indicator(s) Type Ultrasonic= Green LED
Item Type Line voltage Ceiling Sensors
Material ABS (Acrylonitrile butance styrene - Thermoplastic polymer)
Mounting Type Ceiling Mount
Operating Temperature 32°F to 104°F (0°C to 40°C) with rate of change not exceeding 20°F(11°C) per hour
  • Controls - Ambient Light - 1 to 1000 foot candles
  • Controls - Sensitivity - Adaptive 0 to 100%
  • Controls - Time Delay - Test (8 seconds), adaptive 8 to 40 minutes
  • Electrical - Load Rating - 20A 120 VAC Incandescent, 20A 120 or 277 VAC Magnetic Ballast, 16A 120 or 277 VAC Electronic Ballast, 1HP 120 VAC Motor Load, 3/4HP 277 VAC Motor Load
  • Electrical - Power Supply - 120-277V AC, 50/60Hz Single Phase
  • Environmental - Storage Temperature - -20°F to 150°F (-29°C to 65°C), 0% to 95% non-condensing relative humidity
  • Sensing Indicators - Ultrasonic - Green LED
Series Ultrasonic
Storage Temperature Range -20°F to 150°F (-29°C to 65°C)
Style Ceiling Mount
  • Sensors
  • Sensors
UPC 783585256924


Diameter 4.5 in
Height 3.4 in
Mounting Height 8-12 ft

Electrical Ratings

Amperage Rating 20 A
Current / Amperage Rating 20 A
Current Rating 20 A
Frequency Rating 50/60 Hz
Sensitivity Adaptive 0 to 100%
Supply Voltage 120-277V AC, 50/60Hz Single Phas
Voltage Rating 120/277 VAC
Voltage Rating Description 120/277V AC

Certifications and Compliance

Industry Standard(s)
  • ASHRAE 90.1 Compliant
  • cULus Listed To UL244A