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The Business Lighting Experts

Wattstopper CI-305 Passive Infrared Low Voltage Ceiling Sensor

SKU: CI-305 | Ordering Code: CI-305  | UPC: 754182914319

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The Wattstopper CI-305 passive infrared (PIR) ceiling sensor automatically turns lighting on and off based on occupancy. The sensor mounts on the ceiling with a flat, low-profile appearance and provides 360° of coverage.

The CI-305operates on 24 VDC, VAC or halfwave rectified. 

has the flexible to work in a variety of applications, where one technology alone could cause false triggers. Ideal applications include classrooms, open office spaces, large offices and computer rooms. Areas with high ceilings or with two-level lighting can also be controlled.

 To be installed by a licensed electrician.

  • 24 VDC/VAC
  • Factory set for a 20 minute delay, ideal for both energy savings. Installers can quickly select other fixed time delays (5, 10, 15 or 30 minutes) via DIP switches
  • Automatic or manual-on operation when used with a BZ-150 Power Pack 
  • Detection Signature Processing eliminates false triggers
  • Walk-through mode turns lights off three minutes after the area is initially occupied - ideal for brief visits such as maill delivery
  • Built-in light level sensor featuring simple, one-step setup
  • LED indicates occupancy detection
  • Mounting options: Ceiling tile, 4" square junction box with double-gang mud ring. Clip-mounting system simplifies ceiling tile installation
  • Plug terminal wiring system for quick and easy installation
  • Sensitivity adjustment: PIR (high/low)
  • Multilevel Fresnel lens provides 360° coverage
  • Current: 9 mA
Full Specs



Model Number


Line Voltage

Depth (in)
For fixtures and ballasts, depth is the measurement of total distance from front to back of the product in inches.
Diameter (in)
Light bulbs: a measurement of a bulb's width taken at the widest point of the bulb. Fixtures: the measurement across the widest point of a circular fixture.
The decorative finish of the item.


Ceiling tile or 4" J-box

Range of Motion (degrees)



5 year limited
Maximum Current (Amps)
The maximum amount of Amps that a ballast can hold.
Coverage Area (sq ft)
Maximum amount of space in squre feed that this unit is capable of effectively covering.