Crestron GLS-OIR-C-NS – Passive Infrared Ceiling Mount Occupancy Sensor

Product Overview

The Crestron GLS-OIR-C-NS is a passive infrared (PIR) ceiling-mount occupancy sensor designed for use with Crestron lighting control and building automation systems. It detects the presence or absence of occupants in a space by sensing infrared (heat) movement and reports that status to the control system to automate lighting, HVAC, or other building functions. The NS designation indicates no shroud is included.

Product Description

Occupancy-based automation is a standard energy management strategy in commercial buildings, and the GLS-OIR-C-NS provides reliable PIR detection from a ceiling-mounted position. Ceiling mount placement maximizes coverage area and provides a clear overhead sightline across a room, reducing blind spots common with wall-mounted sensors. The sensor connects to Crestron control processors and lighting systems via standard Cresnet or compatible wiring, making it straightforward to integrate into new or retrofit installations. Without a shroud, the sensor delivers its full field of view, which is appropriate when maximum coverage is required without intentional restriction of the detection zone.

Key Features

• Passive infrared detection technology for reliable occupancy and vacancy sensing
• Ceiling-mount installation maximizes coverage and reduces detection blind spots
• No-shroud (NS) design provides full, unrestricted field of view
• Integrates with Crestron lighting control and building automation processors
• Suitable for new construction and retrofit installations
• Supports automated lighting, HVAC, and energy management workflows
• Low-profile ceiling mount for unobtrusive installation

Typical Applications

• Commercial office spaces with occupancy-based lighting control
• Conference rooms requiring automatic lights-on/off based on occupancy
• Classrooms and educational facilities with energy management systems
• Hospitality spaces automating HVAC and lighting based on room occupancy
• Retail environments integrating occupancy data into building management

Technical Specifications

FAQs

Q: What is the detection range of the GLS-OIR-C-NS?
A: Detection range depends on ceiling height and the sensor's field of view specifications. Refer to the Crestron GLS-OIR-C-NS product datasheet for coverage area details at standard ceiling heights.

Q: Can this sensor be used for vacancy-only (manual-on) control?
A: Yes. When integrated with a compatible Crestron lighting control processor, the sensor can be configured for vacancy-only operation where lights must be turned on manually but turn off automatically when the space is vacant.

Q: Does the no-shroud configuration affect detection accuracy?
A: Without a shroud, the sensor operates at its full designed field of view. A shroud is used when you need to restrict the detection zone—for example, to prevent sensing in adjacent areas. For full-room coverage, the no-shroud configuration is appropriate.