In recent years, automatic doors have been increasingly adopted in modern facilities such as hospitals, shopping malls, airports, railway stations, and office buildings. Beyond convenience, automatic doors contribute to enhanced safety, reduced physical contact, and optimized pedestrian flow. However, for an automatic door system to operate accurately and safely, the sensor plays a decisive role. A low-quality sensor can lead to various issues such as delayed door opening, doors closing suddenly while someone is standing in the doorway, or false opening and closing caused by signal interference—posing potential safety risks. For this reason, NABCO sensors have become a preferred choice for many investors thanks to their high stability and safety in large-scale projects. So, what is an NABCO sensor, and why is it an indispensable component of modern automatic door systems? Let Sonha Auto walk you through the details in the article below.
What is an NABCO sensor?
Understanding the concept of automatic door sensors
An automatic door sensor—often referred to as a door sensor—is an intelligent sensing device installed on automatic doors to detect people or objects moving within its detection zone. Based on this detection, the sensor sends signals to the control unit to open the door and automatically close it once no movement is detected, ensuring convenience and safety.
Unlike push buttons or manual switches that require physical interaction, sensors operate fully automatically and contact-free. When someone enters the detection zone, the sensor identifies movement or presence and triggers the door to open. Thanks to this capability, the sensor is considered the “sensory brain” of an automatic door system, determining operational accuracy, safety, and overall user experience.
What is an NABCO sensor?
An NABCO sensor is a premium sensor line researched and manufactured by NABCO, a brand under Nabtesco Corporation (Japan). NABCO sensors are designed to be 100% fully compatible with NABCO automatic door systems. Instead of using generic sensors with unstable sensitivity, NABCO automatic door sensors utilize proprietary signal-processing algorithms that accurately identify movement direction and effectively filter out environmental disturbances such as sunlight, rain, or small animals.
NABCO sensors are widely applied to various door types, including automatic sliding doors, automatic curved doors, automatic swing doors, and NABCO revolving doors. Thanks to seamless integration between hardware and control software, NABCO sensors ensure more stable, precise, and safer door operation compared to non-synchronized sensor solutions.
Structure and operating principle of NABCO sensors
To better understand what is an NABCO sensor, let’s examine its structure and operating mechanism.
Structure of an NABCO sensor
A complete NABCO sensor typically consists of the following main components:
- Transmitter and receiver units: Emit infrared beams or microwave signals into the detection area and receive reflected signals from objects or the environment to detect movement or presence.
- Signal processing unit: Analyzes collected data, filters noise, and identifies valid signals.
- Protective housing: Made from high-grade UV-resistant plastic, dust-resistant and moisture-resistant, protecting internal components from environmental impacts.
- Adjustment controls: Allow fine-tuning of detection width, depth, and sensitivity to suit specific installation conditions.
Operating principle
NABCO sensors operate based on the following principle:
When a person or object enters the detection zone, the NABCO sensor detects changes in signals (thermal or reflected waves). This signal is processed and sent to the door controller to activate door opening. During operation, the sensor can distinguish real movement from interference factors such as light changes or minor vibrations. When no signal is detected within the detection area, the door automatically closes after a preset delay, ensuring energy efficiency and safety.
Thanks to accurate detection, the sensor ensures the door opens at the right time and for the right target, minimizing false openings or failures to open. This capability helps:
- Enhance user safety
- Reduce collision and door-jamming risks
- Optimize pedestrian flow in high-traffic areas
- Minimize unnecessary door opening time, improving energy efficiency
Common types of NABCO sensors
Depending on usage requirements, NABCO sensors can be classified into several specialized types:
- Door activation sensors: Typically installed above the door header to detect approaching users and trigger door opening. A notable example is the premium NABCO NSW-A01 Super Sensor from the N Search W series. The NSW-A01 features a detection area up to four times larger than conventional sensors, enabling more accurate recognition of approaching users. With its ability to distinguish movement direction, it prevents the door from opening when someone merely passes by or stands still within the detection zone, thereby optimizing door control and improving energy efficiency.
- Safety sensors: Also known as anti-trap sensors. These are usually small infrared sensors installed on both sides of the door frame to detect people standing within the doorway and prevent the door from closing, avoiding collisions.
- Combined sensors: Advanced NABCO sensor models integrate both activation and safety functions into a single device, helping create a cleaner, more modern façade.
- Specialized sensors: Contactless sensors designed for hospitals or high-hygiene areas. Users only need to move their hand close to the sensor—without touching—to open the door, ensuring maximum sterility.
Key advantages of NABCO sensors
Compared to standard sensors, NABCO sensors stand out due to the following advantages:
- High sensitivity and precise detection: Capable of detecting fast-moving pedestrians or users wearing dark clothing, which often challenge conventional infrared sensors.
- Excellent noise filtering: Resistant to interference from LED lighting, strong sunlight, rain, or wind-induced movements.
- Exceptional durability: An NABCO sensor can operate reliably for 10–15 years with proper maintenance.
- Perfect compatibility: No signal conflicts with NABCO controllers, ensuring fast installation and precise calibration.
These strengths make NABCO sensors the preferred choice for projects requiring continuous and stable operation.
Important considerations when selecting and installing NABCO sensors
To achieve optimal performance, NABCO sensor installation must follow key technical principles:
- Choose the right model: Doors higher than 3 meters require sensors with stronger detection power, while waiting areas need deeper detection zones.
- Installation position: Sensors should be mounted centrally above the door to ensure balanced detection coverage on both sides.
- Detection zone adjustment: Avoid overly wide detection zones that may extend to moving objects outside the entrance, such as passing vehicles, which could cause unwanted door activation.
- Qualified installation provider: Technicians must be experienced in NABCO sensor programming to optimize all parameters effectively.
Sonha Auto – Authorized supplier and installer of genuine NABCO sensors
To maximize sensor performance, understanding what is an NABCO sensor and choosing a professional supplier and installer are critical. Sonha Auto is proud to be NABCO’s strategic partner in Vietnam, delivering comprehensive automatic door solutions, including:
- Genuine products: Guaranteed authentic NABCO sensors with full CO and CQ certifications from Japan.
- Extensive project experience: From Noi Bai International Airport to international hospitals, Sonha Auto has deep technical expertise to recommend the most suitable solutions for each site.
- Dedicated service: Beyond product supply, we support customers throughout the entire lifecycle with periodic maintenance and sensor calibration, ensuring optimal door performance at all times.
Using genuine NABCO sensors combined with proper installation ensures long-term stability, durability, and safety of automatic door systems.
>>> See more: Why are NABCO hospital automatic doors prioritized in major healthcare facilities?
Conclusion
We hope this article has fully answered the question what is an NABCO sensor and clarified the importance of this small yet critical component in determining the effectiveness and safety of automatic door systems. With high precision, stable operation, and international safety standards, NABCO sensors are an ideal choice for modern facilities.
👉 Contact Sonha Auto for professional consultation and to select the most suitable NABCO sensor solution for your project.
