WattStopper CI-305 PIR Ceiling...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$253.54
$140.43
WattStopper CI-305 PIR Ceiling Occupancy Sensor 24VDC 1200 sq ft Coverage Low Profile

WattStopper CI-305 PIR Ceiling Occupancy Sensor 24VDC 1200 sq ft Coverage Low Profile

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Model: CI-305
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$253.54
$140.43
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WattStopper CI-305 PIR Ceiling Occupancy Sensor 24VDC 1200 sq ft Coverage Low Profile

Professional Low Voltage Occupancy Detection for Energy Management

The WattStopper CI-305 PIR Ceiling Occupancy Sensor delivers reliable 24VDC operation with 1200 square foot coverage area. This low-profile ceiling-mounted sensor features 360� coverage and accepts low-voltage switch input for manual-on operation, providing flexible automatic or manual-on operation when used with a BZ-150 Power Pack.

Professional Features & Benefits

  • 1200 sq ft Coverage: Provides comprehensive area monitoring for medium to large spaces with reliable occupancy detection.
  • 24VDC Operation: Low voltage design ensures safe installation and operation in commercial and residential applications.
  • 360� PIR Detection: Complete circular coverage eliminates blind spots for optimal occupancy sensing performance.
  • Low-Profile Design: Architecturally appealing appearance integrates seamlessly with ceiling installations without visual intrusion.
  • Manual-On Capability: Accepts low-voltage switch input for user control while maintaining automatic operation functionality.
  • Walk-Through Mode: Increases energy savings potential by preventing unnecessary activation during brief occupancy periods.
  • Plug Terminal Wiring: Quick and easy installation reduces labor time and ensures reliable electrical connections.

Technical Specifications

  • Country Of Origin: China
  • Product Depth Us: 5.0 in
  • Product Environmental Profile: Yes
  • Product Height Us: 2.0 in
  • Product Volume Us: 47.5 cu in
  • Product Weight Us: 0.4 lb
  • Product Width Us: 4.0 in

Professional Applications

  • Commercial Office Buildings
  • Retail Establishments
  • Educational Facilities
  • Healthcare Facilities
  • Hospitality Properties
  • Multi-Unit Residential Buildings
  • Professional Service Centers

Why Choose WattStopper Quality?

WattStopper delivers proven occupancy sensing technology with reliable 24VDC operation and comprehensive 1200 square foot coverage. The low-profile design and plug terminal wiring ensure professional installation results, while walk-through mode and manual-on capabilities provide advanced energy management functionality for demanding commercial applications.

Manufacturer Resources

Spec Sheet

Product Specs

Product Depth Us:
5.0 in
Product Environmental Profile:
Yes
Product Height Us:
2.0 in
Product Volume Us:
47.5 cu in
Product Weight Us:
0.4 lb
Product Width Us:
4.0 in
Department:
Electrical
Product Subgroup:
Lighting Controls & Sensors
Product Type:
Occupancy Sensor
Product Group:
Wiring Devices
Product Depth:
1.02 in
Product Length:
4.5 in
Product Width:
4.5 in

WattStopper CI-305 – Frequently Asked Questions

1) Does the WattStopper CI-305 ceiling sensor switch the lights on its own, or do I need a power pack?
The CI-305 is a low voltage sensor only, it does not switch line voltage. It runs on 24VDC and needs a BZ-150 Power Pack to supply the 24V and do the actual load switching. Budget the power pack into every room on the job, plus low voltage cable from sensor to pack.
2) How much floor area will one CI-305 occupancy sensor cover?
One CI-305 covers up to 1200 square feet with a 360 degree pattern from the ceiling, so it is sized for medium to large open rooms rather than a private office or a restroom stall. It is passive infrared, which means it needs line of sight to the occupant, so partitions, tall shelving, or an L shaped room will cut into that number and you will want a second sensor.
3) Can occupants turn the lights on manually with the CI-305, or is it automatic-on only?
Both are possible. The CI-305 accepts a low voltage switch input, so paired with a BZ-150 Power Pack you can run it automatic-on or manual-on. Manual-on is what most energy codes want in offices and classrooms, and it is set by wiring the low voltage switch rather than buying a different sensor.
4) Is the CI-305 the right sensor for a warehouse aisle or a restroom with stalls?
Probably not. The CI-305 is passive infrared with a 360 degree ceiling pattern, and PIR needs an unobstructed view of motion. Racking in a warehouse aisle and partitions in a restroom block that view, so those spaces are usually better served by an ultrasonic or dual technology sensor, or by an aisle-pattern PIR. Open offices, classrooms, retail floors, and lobbies are where a 1200 sq ft 360 degree PIR does its best work.
5) Will a CI-305 sensor fit in a tight ceiling cavity or a hard lid?
The sensor body is 5 in deep by 4 in wide by 2 in high and weighs 0.4 lb, so it is a small, light ceiling-mount unit that does not need structural backing. Low-profile housing, which is why it gets specified in finished lobbies and retail ceilings where a bulky sensor would be noticed.
6) How is the CI-305 wired, and will it slow my electricians down on a big install?
Wiring is by plug terminal, so the low voltage leads land in a connector instead of being spliced, which is what keeps the per-room labor down when you are rolling through forty offices. Since everything at the sensor is 24VDC, the run to the power pack is low voltage cable, not conduit-bound line voltage.
7) Do the lights come on every time somebody walks past the door with the CI-305?
Walk-through mode handles that. It keeps brief pass-through occupancy from committing the room to a full time-out cycle, which is the usual complaint in corridor-adjacent offices and copy rooms where the lights used to burn for fifteen minutes after someone grabbed a file.
8) What exact part number do I order for the WattStopper low voltage ceiling sensor?
Order by manufacturer part number CI-305, WattStopper brand. It is sold as a single model with no finish or voltage options to specify, the sensor is 24VDC across the board. Country of origin is China if your submittal package asks for it.
How fast can I get the WattStopper CI-305 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the WattStopper CI-305 come with a warranty?
Absolutely. The WattStopper CI-305 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the WattStopper CI-305?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the WattStopper CI-305 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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