Smart building

Key considerations when choosing room occupancy sensors

Installing a room occupancy sensor offers several benefits to building managers and business owners, helping to inform decision-making and safety measure implementation.
Key considerations when choosing room occupancy sensors

However, it is essential to consider a few key factors when choosing a room occupancy sensor to ensure it is suitable for your space. This blog post will outline those factors and why they are necessary.

Room occupancy sensors

With the rise of smart buildings and related technologies, room occupancy detectors are becoming more commonplace. They provide a range of benefits, especially helping you to understand more about how your space is being used and what you can do to make it more employee-friendly and energy efficient. Occupancy sensing helps to provide accurate data on, for example, how many people are in a meeting room or what desks are available at a given time (vacancy sensors), all of which help with space utilization and planning.

To ensure the sensor you choose meets your business requirements or personal preferences, let us consider some key factors before purchasing one.


It is important to know that the occupancy sensors being used are accurate and can provide you with the data you need when you need it. The best people counting systems offer high accuracy in the region of 95%+ with the capability to filter out incorrect data and static objects so the focus remains on people walking through the sensors in both directions

Key considerations when choosing room occupancy sensors

Communication protocol

Everyone has different device requirements, thus it is crucial that people counting solutions are primed for integration into existing systems. You may need a range of communication protocol options, including Ethernet, PoE or WiFi connectivity. Additionally, smart devices are increasingly set up for integration into LoRaWAN infrastructures, which circumvents the need to connect to the end user’s network at all.

Data transmission integrity and simplicity of integration is central to the decision making process when selecting new people counting devices. Some solutions come with embedded web GUI enabling direct data integration to the Cloud and servers via HTTP or MQTT. This allows data to be displayed on a dedicated IoT portal for visual and real-time occupancy or sent to a third party or web server.


Privacy concerns arise when people think of cameras and sensors being installed in certain places. However, many new generation people counting systems are GDPR compliant by design. Such counting devices acquire non-intrusive depth image data, which means that any information obtained will not help identify a person. These systems typically work via infrared Time-of-Flight rather than using a camera, meaning that the data received cannot identify people, and anyone who passes through the sensor remains anonymous.

Entrance size

Whether you want to monitor a meeting room or a university, a range of people counting systems are available for you to choose from. Larger entrances will require optimisation to ensure counting accuracy, given that some anonymised systems may fail to differentiate between occupants in close proximity to one another.

A lack of optimization for heavy foot traffic through a wider field of view could reduce accuracy. A dedicated system for large indoor entrance monitoring, People Counting L-XL from Terabee, is the ideal solution for congress centers, hotels, universities and similar buildings. Alternatively, the People Counting M is more suitable for smaller spaces like single doorways and narrow passages.

Key considerations when choosing room occupancy sensors

Firmware updates

Keeping your device running smoothly is key to receiving accurate data. The Terabee devices for room occupancy monitoring can be managed both on-site and remotely. You can also receive support for firmware updates via the Device Management Services, reducing the time needed to check for updates.


Terabee’s People Counting systems have been designed with an easy installation process in mind. They are lightweight, compact and can be installed onto a ceiling or over an entrance/exit as easily as fitting a smoke detector. The LoRaWAN-enabled model, People Counting L-XL LoRa, removes the need for Ethernet cable connections should you wish to operate wirelessly and independently of the in-house IT system. This also reduces installation costs.

Light conditions

Lighting can be critical for preserving the integrity of occupancy data, however, infrared Time-of-Flight sensors, like those offered by Terabee, work effectively in low-light conditions. They are often used as sensors to support cost and energy-saving plans, as lights can be turned on when someone enters a room and off when everyone has left

Occupancy Sensors And Monitoring Considerations With Terabee

People counting systems with Terabee

Terabee offers a range of room occupancy sensor solutions.

The People Counting L-XL and  People Counting M devices support a range of business applications and are optimized for larger and smaller entrances, respectively.

In addition to design and manufacturing the devices, to help you make the most of your people counting system, Terabee provides a range of professional services including:

  • Professional services
  • Support and maintenance services
  • An IoT platform



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If you would like to learn how to deploy room occupancy sensing solutions in your facility, contact a member of the Terabee team today.

Related products

Terabee People Flow Counting L-XL

GDPR compliant people counting device. Optimize value and reduce costs from your retail operation, smart building or office space
Using advanced Time-of-Flight technology, Terabee People Flow Counting L-XL is GDPR compliant and provides accurate people counting data (98% accuracy or more) by monitoring the number of people entering and exiting doorways or corridors.

Easy to configure and install on high ceilings, the Terabee People Flow Counting L-XL fits any kind of wide indoor entrance, up to 15 meters in a multi-device setup. Our people counting algorithm is capable of filtering out static objects and counting multiple people passing in both directions below the device as they enter or leave a space.

The solution consists of an IoT people counting device and an optional IoT platform. Two product variations allow transmission of the data via Power over Ethernet or LoRaWAN. Interested? Contact us.

Terabee People Flow Counting M 2.0

Get real-time people counting data for single doorways and narrow corridors
Real-time data is the backbone of our modern, fast-paced world especially when it comes to monitoring space usage, occupancy, energy efficiency, security, building performance or tailored services. The Terabee People Flow Counting M 2.0 device is GDPR compliant by design, with a real-time data capability, providing seamless, accurate, and highly effective footfall measurement, at a competitive price.

Using Time-of-Flight technology, the People Flow Counting M 2.0 solution guarantees anonymity in its operations, prioritizing data privacy protection while offering robust, reliable occupancy monitoring.

People Flow Counting M 2.0 is the perfect addition to your Building Management System. The “smaller sibling” of People Flow Counting L-XL, People Flow Counting M 2.0 is designed for smaller doorways and narrow corridors. It comes in both Power over Ethernet (PoE) and LoRa models to best suit your needs.
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