What is an automatic door? How it works & popular types

1. What is an automatic door?

An automatic door opens and closes without manual contact thanks to a motorized drive and intelligent sensors. When a person or object enters the detection zone, the sensor sends a signal to the controller, which activates the motor so the door operates quickly and safely.

2. How automatic doors work

Automatic doors operate through the coordination of sensors, a central controller, and a drive motor. As a person approaches, infrared or radar sensors detect motion and relay a signal to the controller. The controller then commands the motor to drive gears and a timing belt, opening the door; once passage is complete and no object is detected, the motor returns the door to the closed position.

Beyond motion sensors, many modern systems include safety sensors that detect obstacles in the closing path. If an object is detected, the door slows, stops, or reverses to prevent contact, ensuring user safety. Speed control also supports customizable parameters such as opening time, closing speed, and clear opening width to match real-world needs especially in high-traffic settings like malls or hospitals, where fast cycling must be balanced with safety and stability.

With intelligent control, automatic doors deliver both convenience and energy savings. Contemporary motors are engineered for low power consumption and quiet, durable operation. In short, the working principle blends technology with usability to enhance the user experience across all building types.

3. Popular types of automatic doors

There are several categories of automatic doors on the market, each designed for specific applications. Understanding the differences helps you choose the right solution for your project.

3.1 Automatic sliding doors

This is the most common type, seen in supermarkets, shopping centers, and offices. The door panels glide horizontally along a guided track, creating a tidy look, saving space, and providing a wide, accessible passage. Reliable motion and simple ergonomics make it a versatile choice for public entrances.

3.2 Automatic revolving doors

These doors rotate around a central axis and are typically installed in hotels, premium office buildings, or large malls. They support continuous pedestrian flow while reducing dust, noise, and drafts from outside. By maintaining interior temperature, revolving doors also improve energy efficiency and provide a prestigious, high-end aesthetic.

3.3 Automatic swing doors

Similar to traditional hinged doors but equipped with a motor and sensors to open and close automatically. They are common in hospitals and offices or anywhere with moderate foot traffic. Advantages include straightforward installation, broad applicability, and compatibility with many interior layouts.

3.4 Automatic folding (bi-fold) doors

Panels fold onto themselves when opening, maximizing the clear passage in tight spaces. This design is useful where the footprint is constrained or where a wider opening is needed on demand. Folding systems deliver both space efficiency and smooth circulation.

Each type has its own strengths convenience, elegance, or space optimization so selection should reflect your use case, architectural design, and budget.

4. Advantages and applications of automatic doors

Automatic doors enhance day-to-day convenience while improving aesthetics, safety, and space efficiency. Depending on the model, they are used widely in both commercial and residential environments.

4.1 Convenience and modern experience

No touch is required simply approach and the door operates automatically. This is especially helpful in busy areas, when carrying items, or in time-critical spaces such as hospitals and airports. Hands-free access also supports hygiene goals in healthcare and food service settings.

4.2 Safety and access control

Anti-pinch and obstacle-detection sensors prevent accidental contact and injuries. Doors can be integrated with access control systems cards, fingerprints, or PIN codes to raise security levels. This makes them well suited to office buildings, industrial sites, and controlled facilities.

4.3 Enhanced aesthetics

Modern lines, refined detailing, and high customization give automatic doors a premium visual impact. Glass sliding or revolving doors create brighter, more open spaces and a professional appearance. The entrance becomes a design focal point that elevates the entire property.

4.4 Broad use across sectors

Automatic doors are commonly found in many settings and can be specified to match each environment’s needs. Typical applications include:

• Shopping centers and supermarkets
• Hotels and restaurants
• Hospitals and schools
• Offices, factories, and residential buildings

5. A trusted supplier and installer of automatic doors

Choosing a reputable supplier directly affects product quality and long-term durability. Thuy Linh Long is an authorized distributor of Falcon automatic doors in Vietnam, delivering modern solutions with end-to-end services from consultation and installation to warranty and maintenance.

5.1 Genuine Falcon products

All doors and accessories at Thuy Linh Long are imported directly from Falcon, meeting international standards for stability, longevity, and design versatility. A wide range of models ensures the right fit for diverse spaces.

5.2 Professional consultation and installation

Experienced technicians survey your site, propose optimized solutions, and complete installation quickly and accurately. Workmanship prioritizes both safety and aesthetics to achieve a seamless result.

5.3 Clear warranty and after-sales support

Customers receive reliable warranty coverage, on-site technical assistance, and scheduled maintenance services. This keeps doors running smoothly and extends equipment life.

If you’re exploring automatic doors for your project, contact Thuy Linh Long for tailored advice, a transparent quotation, and attractive promotions. We are a trusted source for high-quality, elegant, and durable Falcon automatic door systems.