Description
Philips Dynalite OccuSwitch Classic Infrared Ceiling Mount Sensors, 360˚ Coverage, High to Low Motion Sensitivity, Passive Infrared (PIR), Low Voltage 24VDC (use Power Pack 120-277V line)
Philips Dynalite OccuSwitch LRM2250 Infrared Ceiling Sensor Guide
Quick Answer: The Philips OccuSwitch LRM2250 (Dynalite / Signify) is a ceiling-mounted passive infrared (PIR) occupancy and daylight sensor engineered for standalone automatic lighting control. Operating directly on 24VDC voltage, it features an integrated heavy-duty 16A switching relay, 360-degree coverage up to 400–600 sq ft, an adjustable ambient daylight threshold, and programmable time-delay settings (1 to 30 minutes) to eliminate wasted lighting power in offices, classrooms, conference spaces, and restrooms.
Philips OccuSwitch LRM2250 Overview & Key Features
The Philips OccuSwitch LRM2250 standalone ceiling sensor provides turnkey occupancy detection and smart daylight hold-off in an all-in-one low-profile unit without needing separate power packs:
- All-in-One Line Voltage Operation: Houses internal power supply and heavy-duty 16A switching relay inside the unit, eliminating the labor and hardware cost of external power packs.
- Omni-Directional PIR Coverage: 360-degree detection pattern covering up to 20–25 ft diameter (400–600 sq ft) at standard 8–10 ft ceiling heights.
- Integrated Daylight Override: Built-in photocell allows users to set ambient light thresholds (100 to 1000 lux) so artificial lighting remains off when natural daylight is sufficient.
- Configurable Off-Delay Timing: User-selectable timeout durations from 1 to 30 minutes, plus an automatic smart learning mode that dynamically adjusts delays based on room activity patterns.
- Parallel Sensor Linkage: Supports parallel wiring of multiple LRM2250 units to expand occupancy coverage in large corridors, open offices, and irregular floor plans.
Philips OccuSwitch LRM2250 Technical Specifications
Core operational parameters and electrical ratings for the Philips Dynalite / Signify OccuSwitch LRM2250:
| Specification Parameter | Rating / Value | Details & Performance Standards |
|---|---|---|
| Operating Line Voltage | 24VDC | Low Voltage |
| Relay Contact Rating | 16A Electronic / Ballast / LED | Heavy-duty inrush-resistant switching relay |
| Detection Technology | Passive Infrared (PIR) | High-density segmented Fresnel multi-zone lens |
| Detection Coverage | 360° / Up to 600 sq ft | Approx. 20–25 ft diameter field at 8–10 ft height |
| Daylight Sensor Range | 100 – 1000 Lux | Adjustable ambient light hold-off threshold |
| Time Delay Settings | 1 to 30 Minutes | Manual potentiometer adjustment or smart auto-mode |
| Mounting Method | Ceiling Flush / Surface Box | Mounts to standard octagonal/square junction box |
| Operating Temperature | 32°F to 104°F (0°C to 40°C) | Commercial indoor rated |
| Compliance & Certifications | UL Listed, CE, RoHS | ASHRAE 90.1, IECC, and Title 24 compliant |
Installation & Wiring Guidelines
- Power Disconnect: Always shut off main AC electrical power at the breaker panel before servicing, wiring, or mounting the sensor.
- Line Voltage Wiring: Connect Line Hot (120–277V) to the Line terminal, Neutral to the Neutral terminal, and Switched Line to the lighting load terminal following the terminal block markings.
- Optimal Placement: Mount the sensor in a central location on the ceiling with an unobstructed line of sight to the entire room. Avoid mounting directly in front of HVAC supply diffusers or strong thermal draft sources.
- Calibration: Adjust the daylight lux dial during normal daytime conditions to the point where artificial lights remain off when natural daylight is sufficient, and set the time-delay potentiometer (typically 15 minutes for office spaces).
Frequently Asked Questions
Does the Philips OccuSwitch LRM2250 require an external power pack?
No. The LRM2250 is a self-contained line-voltage occupancy sensor with an internal transformer and 16A switching relay, operating directly from 120V to 277V AC line power without separate power packs.
Can multiple LRM2250 sensors be linked together for wider coverage?
Yes. Up to 10 OccuSwitch units can be wired in parallel on the same circuit to expand coverage across large, partitioned, or L-shaped commercial spaces.
Is the LRM2250 compatible with LED fixtures and electronic ballasts?
Yes. The sensor contains a heavy-duty inrush-rated 16A relay designed specifically to handle high capacitive inrush loads from electronic LED drivers and fluorescent ballasts.
Spec Sheets
Download the official manufacturer documentation and specifications:
Philips Dynalite LRM2250 Brochure / Specification Sheet
Additional Information
Our Part No: |
BSF-PHLPS-LRM2250 |
Mfr Part #: |
LRM2250/00 |
Manufacturer Material Code: |
912400474166 |
Brand: |
Philips DynaLite OccuSwitch |
Sensor Type: |
Occupancy, Vacancy |
Input Voltage: |
120-277V (Universal) |
Coverage Type: |
Ceiling |
Detection Type: |
Passive Infrared (PIR) |
Color: |
White |
Product Data Sheet: |
See PDF Link Provided |
Dimensions: |
4.5” Dia x 1.5” H |
Features: |
Single mounting post and three color-coded wires |
Warranty: |
Manufacturer's |
Case Size: |
ea |
