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The CRISTALCONTROLS family of line voltage ceiling mount occupancy sensors provides a compact control solution capable of switching lighting loads without requiring a powerpack. CRISTALCONTROLS products utilize the latest passive infrared technology and digital signal processing techniques to provide unmatched detection performance. Additionally CRISTALCONTROLS units are available with an integrated microphone to provide overlapping passive acoustic occupancy detection for rooms with obstructions.

Basic Operation

Sensors detect movement in the infrared energy that radiates from occupants as they move within the devices field-of-view. Once occupancy is identified, the sensor’s internal relay switches power on to the connected lighting. If equipped with passive acoustic detection, the unit’s microphone is then also enabled to further enhance detection while the lights are on. An internal timer is set to keep lights on during brief periods of inactivity, and is reset every time occupancy is signaled by either the passive infrared or acoustic detection technologies. Additionally, optional daylight detection is available that will turn off controlled lighting whenever there is sufficient ambiant light in the space.

Code Compliance

This wall switch sensor can be used to meet many requirements of ASHRAE 90.1 (2016), IECC (2015) and Title 24 (2016).


Operating voltage MVOLT (120/277 VAC, 50/60 Hz)
Load ratings
MAX: 800W @ 120VAC, 1200W @ 277VAC
MIN: None
Load types
– LED Driver/Lamps
– CFL, Electronic/Magnetic Ballasts (Fluorescent)
– Tungsten (Incandescent)
Operating temp 10° to 122°F (14° to 50°C)
Relative humidity 0-95% Non-Condensing, Indoor Use Only
4.00” Diameter x 1.25” H
(10.16 x 3.17 cm)
Weight 4.75 oz
Color White
Mounting style
Mud Ring w/ 2.75” Spaced Ears
3.5” Trade Size Octagon Box
Time delays
30 sec to 30 min
10 Minute Default
Listings UL/CUL
  • Digital Passive Infrared (PIR) Detection
  • Passive Acoustic Detection (optional)
  • 360° Coverage Pattern
  • Field Changeable Lens
  • Compact Size and Matte Finish
  • Convenient Test Mode and Adjustable Time Delays
  • Electronically Timed Switching Designed for LED Fixture Control
  • Optional Ambient Light Override (Photocell)


Line voltage sensors are self-contained units that directly power from and switch 120/277 VAC. Typically they are used to control areas where a single sensor’s coverage area is sufficient for the entire space.

  • Private Restrooms
  • Small Office
  • Break Room
  • Copy Rooms
  • Conference Rooms
  • Walk-In Closets
  • Vestibule


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