With seven different sensors onboard, the O3 utilizes Sensor Fusion for enhanced occupancy detection, temperature reading, and more.

Illustration of multiple ISAAC screens

5 Unique Sensor Types

The ISAAC O3 Multi-Sensor contains 5 unique sensor types that you can use to monitor rooms.


Detect ceiling, surface, and human height temperature.



Detect ceiling and human height humidity.



Detect if there is motion in the room.


Detect light level intensity.



Detect occupancy using sound from two on-board microphones.

Compact and Powerful

Sleek, smart, and efficient, the O3 is designed to complement a room, not distract from it. Installed on the ceiling, the O3 provides the best vantage point for better detection, without cluttering your walls.

Occupancy Count

Occupant estimation uses onboard sensors and machine learning to estimate the number of people in a space.

Illustration of the O3 Multi-Sensor in a room with people

Monitoring Sensors

Give your O3 sensor a name and enter its IP Address to start monitoring in the Asset Dashboard. This allows you to view up to the last 30 days of data from the sensor.

Quick Start Guide

Already have an O3 Multi-Sensor? Get started with the quick start guide!

Get Started

Technical Specifications

Diagram of the O3 Multi-Sensor specifications

Temperature Sensors

  • Composite temperature value ± 0.5°C (± 1.0°F) typical with calibration.
  • Digital temperature sensor ± 0.5°C (± 1.0°F)
  • Infrared temperature sensor ± 0.5°C (± 1.8°F)
Humidity Sensors
  • Accuracy ± 3% for 20% to 80% RH @ 15°C to 30°C (59°F to 86°F)
Motion Sensor
  • Passive infrared (PIR) motion sensor.
    Motion sensing range:
  • 9.1 m (30 ft) diameter @ 4.6 m (15 ft) mounting height.
  • 5.5 m (18 ft) diameter @ 2.4 m (8 ft) mounting height.
Light Sensor
  • ± (6+5% reading) lx
Audio Input
  • 2 microphones for acoustic occupancy detection.
LED Ring
  • Full color ring with 12 RGB LEDs
Audio Output
  • 1.0 W mono speaker for tones and audio output.
Universal Points
  • Up to 2 inputs (16-bit), software configurable for the following types:
  • 0-5 VDC
  • 0-10 VDC
  • 10 kΩ thermistor
  • Dry contact (using 10 kΩ thermistor software setting)
  • 4-20 mA (using external 250 Ω resitor on 0-5 V setting
  • Removable screw-type terminal connectors.
Wiring Class
  • Class 2 / SELV
  • 24 VDC (20-28 VDC)
  • 2 W typical, 9 W max, Class 2
Interfaces and Protocols
  • BACnet (BACnet/IP, BACnet/Ethernet,BACnet/SC)
  • EnOcean (868 MHz or 902 MHz)
  • MQTT
  • BLE 5.0
  • Arm® Cortex®-A7 MPU + Cortex-M4 MCU
  • 256 DDR3L RAM
  • 4 GB eMMC flash memory
  • Real-time clock (RTC)
  • Supercapacitor power backup for RTC
Communication Ports
  • Dual Ethernet (10/100 Base-T)
Ambient Rating
  • 0°C to 45°C (32°F to 113°F) 
  • 10% to 95% RH (non-condensing)
  • 180 x 41.5 mm (7.1 x 1.6 in.)
  • 350 g (0.77 lb)
Compliance & Listings
  • CE
  • FCC/IC
  • NCC (in progress)
  • C-UL Listed
  • UL 916 Listed

We've partnered with Delta Controls to bring you the ISAAC O3 Multi-Sensor.
Delta Controls is at the forefront of building automation systems. Their focus on innovation and sustainability has made them industry leaders for over 30 years.

Learn More