Atlona® Network-Enabled Occupancy Sensor
The Atlona AT-OCS-900N is a network-enabled multi-function sensor designed for use in a wide variety of AV automation applications. This ceiling mounted sensor uses passive infrared (PIR) technology to detect occupancy in the coverage area. The OCS-900N utilizes an IP network to communicate with select Atlona products or our Velocity system to automatically control AV components based on whether the space is occupied. It comes with two lenses that cover up to 900 or 2,000 square feet depending on ceiling height. A blinder insert is included that limits the sensor’s field of view, preventing detection in unwanted areas such as doorways or windows with heavy cross traffic. Installation is simplified by Power over Ethernet (PoE), that provides both communications and power over a single cable as well as spring-loaded clamps that secure the sensor to a ceiling tile.
Atlona® Network-Enabled Occupancy Sensor
The Atlona AT-OCS-900N is a network-enabled multi-function sensor designed for use in a wide variety of AV automation applications. This ceiling mounted sensor uses passive infrared (PIR) technology to detect occupancy in the coverage area. The OCS-900N utilizes an IP network to communicate with select Atlona products or our Velocity system to automatically control AV components based on whether the space is occupied. It comes with two lenses that cover up to 900 or 2,000 square feet depending on ceiling height. A blinder insert is included that limits the sensor’s field of view, preventing detection in unwanted areas such as doorways or windows with heavy cross traffic. Installation is simplified by Power over Ethernet (PoE), that provides both communications and power over a single cable as well as spring-loaded clamps that secure the sensor to a ceiling tile.
In addition to occupancy, the OCS-900N also captures temperature and ambient light level information. Its open standard design allows sensor information to be communicated to third-party ventilation, lighting, and other systems over TCP/IP using common protocols such as UDP, TCP, WebSocket, and MQTT.
Applications
- Commercial – Automate AV system operation in conference rooms and huddle spaces based on occupancy.
- Education – Automate AV system operation in classrooms and lecture spaces based on occupancy.
- Hospitality / Retail – Create interactive with digital signage and video walls in lobbies or stores based on motion near the display.

AV System Automation
The AT-OCS-900N works directly with the AT-WAVE-101 or Velocity™ to automatically control AV system startup or shutdown based on occupancy.

Multi-function and Open Protocols
In addition to occupancy, the OCS-900N also captures temperature and ambient light levels, and allows the information to be communicated to Atlona and third-party systems over the network using common protocols including UDP, TCP, WebSocket, and MQTT.

Customization and Straightforward Installation
Includes two lenses that cover 900 or 2,000 square feet depending on ceiling height and a blinder insert to help prevent unwanted detection from cross traffic. Configurable LED’s to differentiate it from other equipment in the ceiling. Single PoE connection provides both communication and power. Self-contained spring-loaded clamps secure the sensor to a ceiling tile.
Technical Features
- Multi-function sensor that detects occupancy, temperature, and ambient light level
- IP-enabled for communicating state information over Ethernet
- Communicates over the network directly to the AT-WAVE-101 for automatic display control
- Works with Velocity AV control systems for more complex automation applications
- Supports network communications with third-party devices using common protocols such as UDP, TCP, WebSocket, and MQTT
- Power over Ethernet (PoE) for remote power and network connection with a single cable
- Passive infrared (PIR) detection technology
- Customizable detection area with standard lens covering 900 square feet and included accessory lens covering 2,000 square feet
- 360 degrees field of view standard, or limit to 240 degrees with included blinder insert
- Configurable LED indicators may be customized for both color and activity
- Self-contained spring-loaded clamps for easily securing the sensor to a ceiling tile
- Three-year limited product warranty
AT-OCS-900N |
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PIR (Passive Infrared) |
900 ft2 (83.6 m2), 2000 ft2 (185.8 m2) with accessory lens; 360° |
1 x RJ45 |
MQTT, JSON over WebSocket, mDNS, HTTP/TLS, TCP, UDP |
4 - LED, configurable (inner/outer illumination) |
+32 to +122 F |
-40 to +158 F |
90% (maximum), non-condensing |
1.1 W |
802.3af |
2.13" x 2.90" |
2.11 oz |
CE, FCC, UL 916 file no. #E524557, UKCA |
NDAA-899 |
Motion Detection |
Coverage Area |
Ethernet Ports |
Standards |
LED Indicators |
Operating Temperature |
Storage Temperature |
Humidity |
Power Consumption |
PoE Features |
Dimensions (W x H x D) |
Weight |
Certifications |
Compliance |
Manuals and Guides
Support Documents
Third-Party Partner Warranty
We want to make our Third-Party Partner program as easy as possible. That’s why we process all claims directly, without any third party telephone tag. Specific warranty terms and details from the manufacturer are below. View the full Atlona® Warranty.
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