At TRUEiSENSE, we take a sophisticated, multi-layered approach to presence sensing — far beyond the standard motion detectors. With our proprietary Crux Detector, Wave Detector, and Master Pro integration system, we deliver true occupancy detection that transforms how offices manage space, energy, and comfort.

Let’s explore exactly how presence sensors work in office environments — and how TRUEiSENSE is redefining precision sensing with our true presence sensor technology.

What Are Presence Sensors?

Presence sensors (also known as occupancy sensors) detect the physical presence of people in a given area. Once someone enters a room or workspace, the sensor activates connected systems, like lighting, HVAC, or security, based on pre-set preferences or algorithms.

Unlike simple motion detectors, presence sensors are designed to detect even the smallest movements, like typing or shifting in a chair. This makes them ideal for office settings where subtle activity needs to be registered.

Types of Presence Sensors Used in Offices

Presence sensors operate using a few different technologies:

1. Passive Infrared (PIR) Sensors
   PIR sensors detect body heat (infrared radiation) within their field of view. They are energy-efficient and commonly used for lighting control. However, they may not detect very still individuals.
2. Microwave Sensors
   Similar to ultrasonic sensors, but using microwave signals. They penetrate non-metallic materials and can cover larger spaces, making them suitable for open-plan offices.
3. Dual-Technology Sensors
   These combine PIR with ultrasonic or microwave technology to reduce false alarms and ensure accuracy.

How They Work in an Office Environment

Here’s a typical workflow:

1. Detection: A presence sensor detects motion or body heat in a designated area.
2. Signal Transmission: The sensor sends a signal to a connected control system.
3. Activation: Based on the sensor’s input, lights may turn on, HVAC systems may adjust, and even smart desks or shades could respond.
4. Deactivation: After a certain period of no presence detected, systems shut off or return to standby mode.

This process happens in real-time and can be programmed based on time-of-day, occupancy schedules, or user preferences.

What is a Presence Sensor and Why Offices Need It

A presence sensor is a device designed to detect whether a person is present in a specific area. While traditional motion sensors simply detect movement, presence sensors are more advanced — they can detect stationary human presence through subtle indicators like body heat or micro-movements.

In a typical office setting, these sensors are used to:

• Automatically control lighting
• Optimise HVAC (heating, ventilation, and air conditioning)
• Enhance security by monitoring access and usage
• Improve space utilisation for hybrid work models

Without accurate sensing, energy is wasted on lighting and heating unoccupied rooms. Conversely, poorly calibrated sensors can turn off systems while someone is working quietly at a desk. That’s where true presence sensor technology, like TRUEiSENSE, steps in to solve both problems.

Introducing the TRUEiSENSE Crux Detector

The Crux Detector is at the heart of every TRUEiSENSE presence sensor. It acts as the primary engine of detection, identifying the physical presence of a person using a blend of microwave and advanced algorithmic filtering.

What makes the Crux Detector unique?

• It filters out false triggers (like swaying blinds or HVAC airflow)
• It detects even the most subtle forms of human presence
• It adapts to room conditions over time for smarter, more responsive sensing

Wave Detector:

While the Crux Detector captures macro presence, the Wave Detector fine-tunes the signal by focusing on micro-movements, like hand gestures, breathing, or typing. It uses high-frequency microwave sensing combined with AI-based pattern recognition to detect tiny, repetitive motions.

This is crucial in modern offices where employees might:

• Be working in complete silence
• Have minimal body movement for long periods
• Prefer low-light or ambient environments

With the Wave Detector, there’s no guessing — only precise, continuous detection. This ensures that lights don’t flicker off during meetings or while someone is deep in thought. It also avoids unnecessary energy usage when rooms are genuinely vacant.

Master Pro:

Having sensors in every room is useful, but to truly optimise an entire office, you need a central controller that understands the full picture.

That’s where Master Pro comes in.

This smart controller:

• Connects and manages multiple sensors across an office floor or building
• Collects real-time data from Crux and Wave Detectors
• Integrates with building management systems (BMS), HVAC, lighting, and security
• Offers dashboards for monitoring occupancy trends and energy usage

Master Pro helps office managers and facility teams make informed decisions, like adjusting air conditioning based on real-time occupancy or dynamically adjusting lighting based on daylight and actual presence.

Benefits of Using Presence Sensors in Offices

• Energy Efficiency: Automatically turning off lights or adjusting climate control saves electricity and reduces costs.
• Comfort and Convenience: Employees don’t need to manually adjust lighting or temperature.
• Enhanced Security: Unusual movement after-hours can trigger alarms or alerts.
• Data Insights: Smart presence sensors can gather occupancy data, helping facility managers optimise space usage or plan cleaning schedules.

How to Choose the Right Presence Sensor for Your Office

When selecting the right system, consider:

• Room size and shape — Larger areas benefit from networked sensors with centralised control
• Type of activity — Meeting rooms and silent zones need micro-movement detection
• Lighting and HVAC systems — Integration potential with your current infrastructure

A standard PIR sensor may be enough for a hallway, but a CEO’s office or a hybrid collaboration zone deserves the true presence sensor capability of TRUEiSENSE.

Conclusion: The Future of Office Sensing is TRUE

Offices are no longer static places — they’re dynamic, evolving environments. With remote work, hybrid schedules, and rising energy costs, smart infrastructure is no longer a luxury — it’s a necessity.

TRUEiSENSE is proud to lead this shift with our innovative sensor technology. By combining the Crux Detector, Wave Detector, and Master Pro, we offer the most accurate, adaptable, and intelligent true presence sensor system on the market.

Whether you’re managing a single floor or an entire smart building, TRUEiSENSE ensures your spaces respond in real time to real people.

Ready to upgrade your office presence detection? Contact TRUEiSENSE today for a customised consultation and discover the future of responsive workplace environments.