24Ghz mmWave Radar Human Presence Detection Sensors for Hotel Automation

The hospitality automation is actively seeking smarter and more efficient operations. Tone technology is revolutionizing the core of smart room technology: 24Ghz Millimeter Wave (mmWave) Radar sensors. These advanced non-intrusive human presence detection sensors are transforming how hotels and resorts manage utilities and elevate the guest experience enhancement, moving far beyond basic energy savings.

The Limitations of Old Tech

The industry’s older methods for controlling room power are increasingly inadequate for a modern, high-tech stay:

• Keycard Systems: These were once the industry standard for guest detection. However, forcing a guest to insert a card to activate power is cumbersome and inconvenient. Guests have long found ways to defeat this requirement using objects like folded paper or business cards, defeating the system’s intended energy management goal. They represent a major step back from a truly seamless experience.
• PIR (Passive Infrared) Sensors: Currently a popular solution for contactless control, PIR sensors detect heat changes. Their major drawback is the lack of precision: if a guest is motionless—sitting at a desk, reading, or, most importantly, sleeping in bed—the sensor falsely concludes the room is empty. This results in the abrupt and frustrating shutdown of power and HVAC, directly sabotaging guest comfort.

mmWave Radar: True Presence Detection for Hospitality

Millimeter-wave mmWave radar sensor technology works by emitting subtle electromagnetic waves in the millimeter spectrum, typically at 24GHz, and then interpreting the signals that bounce back.

How It Delivers True Presence Detection:

1. Micro-Motion Sensitivity: Unlike PIR, mmWave radar can accurately detects the slightest micro-movements—tiny shifts in the human body, and even subtle changes caused by human respiration and heartbeats.
2. No False Positives: Thanks to this advanced level of static presence detection, a true presence sensor will never turn the power off as long as at least one person is in the room. This guarantees an uninterrupted and personalized stay.
3. No Wall Penetration: A key differentiator from older, lower-frequency microwave sensors is that the 24GHz sensor signals do not pass through walls. This makes it simple to limit detection strictly within the guest room, eliminating false detections from guests in neighboring rooms or staff in the hallway.

Our Solution: The YW204 human presence detector is specially designed for hotel automation and excels at delivering precise, reliable occupancy data.

Integrated with Current Building Automation Systems (BMS)

Our 24GHz human presence detection sensors are engineered for maximum flexibility, ensuring they integrate seamlessly with virtually any standard Building Management System (BMS), power control solution, or Smart Hotel Solution already in place.

This versatility means you can upgrade your presence detection capabilities while leveraging your significant existing investment in room automation. Our sensors are compatible with KNX, Dali D4i Control, RS485 Modbus, 0-10V dimming control, Dry Contact, Tuya etc.

Significant Operational and Energy Savings

An optimized power control system translates directly into substantial cost savings, particularly for resorts and chain hotels with high room counts.

• Maximized Energy Management: mmWave radar sensors enable intelligent automatic power control based on real-time, confirmed occupancy data. By integrating a dimmable occupancy sensor, properties can eliminate unnecessary power usage and precisely control switch-off delays.
• Common Area Efficiency: These sensors excel in common areas like hallways and staircases, controlling smart lighting by dimming fixtures when the area is empty and instantly lighting them up upon detection of motion and presence. This contributes to both hotel sustainability and a reduction in operational costs.

Privacy-First Monitoring and Discreet Aesthetics

In the luxury and boutique segment, maintaining aesthetic integrity and guaranteeing guest privacy are non-negotiable.

• Invisible Integration: mmWave radar waves can pass through non-conductive materials like glass, plastic, and ceramics. This allows for the invisible placement of mmWave radar sensors (e.g., inside the ceiling or behind drywall). This ability ensures discreet installation that preserves the room’s interior design and luxury details.
• Non-Intrusive Sensing: Unlike camera-based systems or other visual tools, mmWave sensors operate solely by detecting movement through electromagnetic waves—they do not capture any visual images. This privacy-first monitoring ensures that guest privacy is respected and fosters a more trusting and comfortable environment.

Optimized Property Management Systems (PMS)

Real-time room occupancy data is fed directly into the hotel’s PMS, benefit for immediate improvements in daily hotel room management. This enables:

Housekeeping Optimization: Our system confirms which rooms are genuinely vacant (not just motionless). This True Presence Detection empowers staff to follow optimized routes, slashing service time, reducing cleaning costs, and guaranteeing minimal guest disturbances.

Guest Safety: In emergency situations, the sensor data generates a dynamic, live map of occupied rooms. This crucial information facilitates the fastest possible evacuation procedures, significantly enhancing overall guest safety.

Seamless Integration with HVAC and lighting : In hospitality, the guest experience is paramount, and mmWave radar sensors can elevate this experience to new heights. By automatically detecting presence from the second somebody enters a room, the sensors eliminate the need to use keycards, providing a seamless experience for the guest. Sensors connect with HVAC and lighting to automatically restore a guest’s preferred settings the moment they enter the room, elevating the guest experience enhancement.

Enhanced guest experience

Guest satisfaction is paramount in the hotel business, and this technology takes it to new levels.

• Seamless Entry: By instantly detecting a guest upon room entry, the sensor eliminates the outdated reliance on keycards, providing a frictionless, contactless control experience.
• Personalized Settings: The sensor can be linked to the HVAC and lighting systems to automatically restore a guest’s pre-set temperature and lighting preferences the moment they are detected. This degree of customisation elevates guest comfort and provides a memorable, high-tech stay.

Privacy-First Monitoring and Discreet Aesthetics

In the luxury and boutique segment, maintaining aesthetic integrity and guaranteeing guest privacy are non-negotiable.

• Invisible Integration: mmWave radar waves can pass through non-conductive materials like glass, plastic, and ceramics. This allows for the invisible placement of mmWave radar sensors (e.g., inside the ceiling or behind drywall). This ability ensures discreet installation that preserves the room’s interior design and luxury details.
• Non-Intrusive Sensing: Unlike camera-based systems or other visual tools, mmWave sensors operate solely by detecting movement through electromagnetic waves—they do not capture any visual images. This privacy-first monitoring ensures that guest privacy is respected and fosters a more trusting and comfortable environment.

The Future of Hospitality is Invisible. 24GHz mmWave radar sensors offer a transformative blend of precision, efficiency, and advanced functionality. By embracing this state-of-the-art Hospitality Tech, hotels can dramatically improve energy management, boost operational efficiency, and deliver an unparalleled, frictionless, and personalized smart hotel solution—all while championing privacy-safe occupancy detection.