Pass & Seymour CI355 Wattstopp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$247.17
$214.59
Pass & Seymour CI355 Wattstopper PIR Low-Profile Ceiling Occupancy Sensor, 360°, 1200 Sq. Ft.

Pass & Seymour CI355 Wattstopper PIR Low-Profile Ceiling Occupancy Sensor, 360°, 1200 Sq. Ft.

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Model: PAS-CI-355

In Stock (leaves warehouse same day if ordered before 3pm ET)

$247.17
$214.59
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Pass & Seymour CI355 Wattstopper PIR Low-Profile Ceiling Occupancy Sensor

The Pass & Seymour CI355 is a Wattstopper passive infrared (PIR) ceiling mount occupancy sensor built for low-profile installation on 100-347 voltage systems. It delivers 360° detection coverage across up to 1200 sq. ft., making it well suited for open offices, classrooms, and commercial spaces where reliable occupancy-based lighting control is required. Detection Signature Processing filters out false triggers and provides immunity to RFI and EMI interference for dependable, consistent performance.

Key Features

  • Coverage Area: 360° passive infrared detection pattern covers up to 1200 sq. ft. for whole-room occupancy sensing.
  • Voltage Range: Rated for 100-347V systems, supporting a wide range of commercial installations.
  • Detection Signature Processing: Eliminates false triggers and provides immunity to RFI and EMI for consistent operation.
  • Built-In Light Level Sensor: Simple one-step set-up streamlines photocell-based commissioning.
  • LED Occupancy Indicator: Visible LED confirms when occupancy is detected for easy verification during setup and testing.
  • Walk-Through Mode: Automatically turns lights off 3 minutes after the area is initially occupied, ideal for brief visits such as mail delivery.
  • Zero-Crossing Switching: Extends relay life by switching at the zero-crossing point of the AC waveform.
  • DIP Switch Adjustments & Clip Mounting: DIP switches simplify sensor adjustments, while the clip mounting system makes ceiling tile installation simple.

Technical Specifications

  • Country Of Origin: China
  • Product Height: 4.5 in
  • Product Length: 4.5 in
  • Product Width: 4.5 in
  • Product Depth: 1.02 in
  • Product Line: Pass & Seymour

Typical Applications

  • Open-Plan Offices and Conference Rooms
  • Classrooms and Educational Facilities
  • Commercial Ceiling Tile Installations
  • Occupancy-Based Lighting Control Retrofits
  • New Construction and Renovation Projects

Why Pass & Seymour?

Pass & Seymour engineers the Wattstopper CI355 with Detection Signature Processing, zero-crossing relay switching, and a simple clip mounting system to deliver dependable occupancy-based lighting control for professional electrical installations. Its wide 100-347V rating and 360°, 1200 sq. ft. coverage make it a versatile choice for code-compliant commercial lighting control projects.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Occupancy Sensor
Configuration:
360° Detection
Voltage Rating:
100-347V
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Lighting Controls & Sensors
Product Length:
4.5 in
Product Width:
4.5 in
Product Height:
4.5 in
Product Depth:
1.02 in

Pass & Seymour PAS-CI-355 – Frequently Asked Questions

1) Will the Pass & Seymour CI355 ceiling sensor work on a 347V lighting circuit?
Yes. The CI355 is rated 100-347V, so it covers 120V, 208V, 240V, 277V and 347V commercial circuits without a separate power pack. That wide range is the main reason it gets specified on mixed-voltage jobs where you would otherwise stock two different sensors.
2) How much floor area does the CI355 occupancy sensor cover from the ceiling?
Up to 1200 sq. ft. with a 360 degree passive infrared pattern, so one unit mounted near the middle of a room handles whole-room sensing. For an open office or classroom bigger than that, you are laying out multiple sensors rather than stretching one.
3) Can the CI355 sensor be installed in a suspended ceiling tile?
That is what it is built for. The CI355 uses a clip mounting system for ceiling tile installation and sits low-profile, measuring 4.5 x 4.5 x 1.02 inches. The 4.5 inch face keeps it inside a standard tile with the body projecting about an inch below.
4) Does the CI355 switch the load itself or does it need a separate power pack?
The CI355 is a line voltage sensor with an onboard relay, and it uses zero-crossing switching to extend relay life. Contrast that with a low voltage head like the Lithonia CM-9, which runs on 12-24V AC/DC and has to be paired with a power pack; the Lithonia CMR-9 is the version of that sensor that includes a relay.
5) What else could I use instead of the CI355 if I need more than 1200 sq. ft. of coverage?
The Leviton ODS10-ID-E is a PIR commercial grade sensor listed at 2100 sq. ft. on 120/277V, so it covers more floor area, but it tops out at 277V. If the circuit is 347V, the CI355 at 100-347V is the one that fits even though its pattern is 1200 sq. ft.
6) What ceiling occupancy sensor covers more square footage than the Pass & Seymour CI355?
The CI355 is rated for 360 degree coverage up to 1200 sq. ft. For a larger area from a single head, the Leviton ODS10-ID-E PIR commercial grade occupancy sensor is rated at 2100 sq. ft. on 120/277V. Note the voltage difference: the CI355 accepts 100-347V, so on a 347V lighting circuit the Leviton 120/277V unit is not a drop-in.
7) Does the CI355 have a built-in photocell so lights stay off when there is daylight?
It does. A built-in light level sensor is part of the unit, with one-step set-up for commissioning, so the sensor can hold lights off when ambient light is already adequate. No separate photocell is needed.
8) How do you adjust time delay and sensitivity on the CI355 after it is mounted?
Adjustments are made with DIP switches on the sensor rather than through a handheld programmer or software. There is also an LED occupancy indicator that lights when motion is picked up, which is how you walk-test coverage at the ceiling before you close up.
9) Will a PIR ceiling sensor false-trigger from HVAC airflow or nearby radios?
PIR sensors react to moving heat, which is why airflow and RF noise are a concern. The CI355 uses Detection Signature Processing to filter false triggers and is immune to RFI and EMI. Keep in mind PIR needs line of sight, so tall partitions or shelving inside the 1200 sq. ft. pattern will shadow part of the room.
10) I am standardizing occupancy sensors across a building. What are the alternatives to the Pass & Seymour CI355?
Within commercial grade PIR, the Leviton ODC Series ODC0S-I1W and the ODS10-ID are line voltage units, the ODS10-ID on 120/277V, and the Leviton ODS15-IDW is a self-adaptive commercial grade PIR. For low voltage layouts driven off a power pack, Lithonia CM-9 and CMR-9 are the options. The CI355 is the pick when you want one part number to cover everything from 100V up to 347V.
11) What is the closest Lithonia equivalent to the Pass & Seymour CI355 ceiling sensor?
The Lithonia Lighting CMR-9 is a PIR occupancy sensor with an integral relay in white, which is the same basic arrangement as the CI355 PIR sensor with its own switching relay. The CI355 is specified for 360 degree detection to 1200 sq. ft. on 100-347V, so confirm the CMR-9 relay rating suits your circuit voltage and load before swapping.
12) For a room with irregular traffic patterns, is the CI355 or a self-adaptive sensor the better choice?
The Pass & Seymour CI355 is set manually: DIP switches handle the sensor adjustments and a built-in light level sensor gives a one-step photocell setup. If you would rather the sensor tune its own sensitivity and timing in the field, the Leviton ODS15-IDW is a PIR self-adaptive commercial grade occupancy sensor. The CI355 remains the pick where a contractor wants the settings fixed and documented for a facility standard.
13) How does the Leviton ODC0S-I1W compare to the Pass & Seymour CI355?
Both are line voltage PIR occupancy sensors for commercial lighting control. The Leviton ODC0S-I1W is an ODC Series commercial grade line voltage PIR sensor. The CI355 is the low-profile ceiling mount design, 4.5 in square by 1.02 in deep, with a clip mounting system intended for ceiling tile and a 360 degree pattern to 1200 sq. ft. on 100-347V. Pick the CI355 when the mounting point is a ceiling tile and you need whole-room 360 degree coverage.
14) What is walk-through mode on the CI355 and when would I use it?
Walk-through mode turns the lights off three minutes after an area is first occupied, so brief entries like a mail drop or a quick look into a storage room do not burn a full time delay. Useful in small rooms and closets where occupancy is usually momentary.
15) Is the CI355 a single model or do I have to pick options when ordering?
One configuration, ordered as Pass & Seymour CI355, manufacturer part number CI-355. There is no finish, voltage or coverage option to specify; the 360 degree pattern and 100-347V rating come as built.
How fast can I get the Pass & Seymour PAS-CI-355 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 Pass & Seymour PAS-CI-355 come with a warranty?
Absolutely. The Pass & Seymour PAS-CI-355 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 Pass & Seymour PAS-CI-355?
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
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