Automatic Door Opener

30
Years of experience
S4A is a manufacturer for Automatic Door Opener, Electromagnetic locks, Access control, UHF RFID reader etc in Shenzhen, China since 2010,            
  S4A-Security For All.S4A Industrial Co., Limited, Founded in 2010, We have been dedicating in access control production R&D and sales for 10year till now. With the belief that we do one thing well in a lifetime, our CEO has been in this industry for 15 years. During the past 10 years, our products have been exported to various countries and regions. And 90% of customers come from the recommendations of cooperative customers, and 80% of the turnover comes from cooperative customers in the past 10years.Your business is a plant, we are the gardener, our mission is to water and fertilize the plant, and make it become the towering tree. We attach great importance to the partner's appeal, customer's suggestions, and feedbacks. To strengthen Product quality awareness, client's service awareness. Our clients and S4A are on the same path walking for many years.       S4A's future would be even more brilliant, this is related to all of our staff's working sweat. When you join this team, you will feel an invisible power to drive walk forward. S4A mainly produces a series of security Door Access Control such as:Network Access Controller, Locker board, Electromagnetic lock, Standalone door Controller, Automatic door opener, etcOur team can manufacture products, sell products, and do after-sales.In the realm of access control, one company stands out for its unwavering commitment to providing security services for everyone. S4A, which stands for "Security for All," has been at the forefront of access control technology for the past 13 years. With its own state-of-the-art factory and a strong focus on research and development, S4A has continuously delivered cutting-edge access control machines with the latest functions. Their dedication to product quality, customer feedback, practicability, and cost performance sets them apart as a leader in the industry.Factory and R&D Expertise:S4A takes pride in its fully-equipped factory, where skilled engineers and technicians work tirelessly to develop and manufacture access control solutions that meet the highest standards. The company's investment in research and development has resulted in a steady stream of innovative products that cater to evolving security needs.By staying ahead of the curve, S4A ensures that their customers have access to the latest advancements in access control technology.Quality Assurance and Customer Feedback:At S4A, product quality is of paramount importance. The company adheres to rigorous quality control procedures throughout the manufacturing process to guarantee the reliability and durability of their access control machines. Each product undergoes comprehensive testing to ensure it meets industry standards and exceeds customer expectations. S4A also places great value on customer feedback, actively seeking input to continuously improve their products and services. By listening to their customers, S4A maintains a customer-centric approach and delivers solutions that address real-world security challenges.Practicability and Cost Performance:S4A understands that access control solutions must not only be technologically advanced but also practical and cost-effective. The company's emphasis on practicability means that their products are designed to be user-friendly, easily integrated into existing systems, and adaptable to various environments. S4A's access control machines are known for their intuitive interfaces, simple installation processes, and seamless compatibility with other security systems. Additionally, S4A strives to provide cost-effective solutions without compromising on quality. Their competitive pricing ensures that security is accessible to businesses and individuals of all sizes.With 13 years of industry experience, S4A has cemented its position as a leading provider of access control solutions. Through their dedication to "Security for All," the company has set a benchmark for excellence in product quality, customer satisfaction,practicability, and cost performance. S4A's in-house factory and research and development capabilities enable them to stay at the forefront of technological advancements in the field of access control. As the company continues to evolve and innovate, S4A remains committed to empowering individuals and organizations with the highest level of security, ensuring that everyone can enjoy the peace of mind that comes with a reliable and efficient access control system.We can create value for you!Quality takes great importance for a company's credibility, and buyer's every penny spend must worth it. That is our most basic principle. Our business mainly for wholesale, so we could offer large quantities at competitive prices. During the past 10 years, We work hard to create value for our customers, and with our help, customers have an increasing market share. 99% of the customer...
4750
Success case
150
Global Locations
99
%
Customer praise
PRODUCT APPLICATION

With a branch office in Qatar, and sole agent in Singapore, Malaysia, The Democratic Republic of the Congo, South Korea, and Egypt. S4A's products circulate around the world.

Read More
Access Control systems with Pedestrian turnstile gate application
Access Control systems with Pedestrian turnstile gate application

The use of access control systems in life has gradually become widespread, and different types of access equipment are required in a different entrance and exit scenarios. For example, three roller gates and turnstiles in stadiums, pedestrian passages in campuses, enterprises, and high-end intelligent buildings. While they effectively help the staff to reduce work pressure, they also ensure the safety of traffic.   Access control gate system has the following five advantages:   1. Simple and easy to use. Existing access control management personnel only need to go through simple training to be able to operate. The maintenance personnel of the access gate can find the fault in a few simple operations, which can be quickly and conveniently eliminated.  2. Advanced technology. Using the most popular wireless network management system at present, the channel gate ensures that your management system will not lag behind in ten years.   3. Low overall cost. From the perspective of installation, debugging and wiring, the use of TCP/IP transmission can reduce a lot of investment. In addition, the construction period is short, which saves wire and labor costs, and is very easy to maintain. Therefore, the use of access control gate system, More advantages in cost.   4. There are many uses. The channel gate management system uses a non-contact smart IC card, also known as a radio frequency card, which successfully solves the problems of multi-use, confidentiality, wear-free, and easy operation of the IC card greatly improves the practicability of the system and can perform a single card After multiple authorizations, the channel gate can be used for other application management. Such as attendance, consumption, parking management, patrol, personnel.   5. Convenient expansion. The computer and the intelligent management system adopt wireless communication, and the channel gate can expand the number of channels at will. That is, when the corresponding control system is installed, if the number of intelligent access gates and elevator control equipment needs to be increased, the hardware only needs to increase the corresponding access gates, and the software can set the new equipment.Three influencing factors of the access control system:  As an intelligent access control system, its much more complicated than traditional access control unit. Naturally, there are more factors affecting its functions. There are three main aspects in a simple understanding:  1, design styleHigh-end pedestrian passages need to integrate product safety, modern, and concise design concepts with the building environment and architectural style; the line is mainly streamlined, reflecting the concise and comfortable style, and the material is more glass and stainless steel. The stylish and transparent design of the company is consistent with the construction style of intelligent buildings; and the high-end pedestrian walkway products have obvious differences in metal surface processing...

Read More
What's kind of sensor we are using for the Automatic Door opener?
What's kind of sensor we are using for the Automatic Door opener?

What's kind of sensor we are using for the Automatic Door opener? Active Infrared Functional Principles: An Active Infrared Detector always consists of one transmitter and at least two receiver chips with high-quality optical systems. The scanning range is set by means of a mechanical micro-speed unit by changing the angle between the transmitter and receiver. This optical procedure is called triangulation or optical differential measurement. Active Infrared Detectors are static—they only detect persons and objects if they break the beam. The detection area consists of spots, and depends to a large extent, on the optical center-to-center distances of the transmitter and receiver lenses. Several beams can be combined in a modular system to form a larger area. Choose from: Background suppression presence detectors are used on moving parts like a swing door or revolving door. This system does not require a background like a wall or floor. Background analysis requires a signal from the background in order to switch the output. The sensor is installed and requires a background (floor/wall). The output is deactivated.The desired scanning range is set mechanically within the predefined possible distances.Each object within the set scanning range is detected statically.Passive Infrared Functional Principles: Passive Infrared Sensors function in a similar way to infrared cameras used to detect heat loss from buildings. The infrared-sensitive sensor forms a heat image of the defined area to be monitored. After an initial set-up time of approximately 20 seconds, the measured infrared image is saved. The sensor switches if the heat image changes as a result of movement. Two conditions must be fulfilled here: 1. There must be a temperature difference of +/- 1.8 F between the object to be detected and the background.2. The object to be detected must move at a rate of at least 4 inches per second. The system is ideal for detecting people only if— there is always a difference of at least 1.8 F between the surface temperature of a clothed person and the surrounding environment. For reasons of a physical nature, this technology should only be used to detect living beings as it’s not always possible to guarantee that the difference in temperature between items such as shopping carts or vehicles, and that of the surrounding environment will be great enough. Microwave sensor ( we have 2 models are available to choose, M204 and M204-T)So, we need to know first what is a Microwave Motion Sensor?A microwave motion sensor uses electromagnetic radiation. It emits waves that are then reflected back to the receiver. The receiver analyzes the waves that are bounced back. If there is an object moving in the room, these waves are going to be altered. The microwave detector is able to identify changes from moment to moment. Ideally, the receiver should be receiving the same waves back again and again.Beca...

Read More
Six application areas of Door access control systems
Six application areas of Door access control systems

1: Office Building The installation of access control in the company gate can effectively prevent outside salesmen from entering the company and disrupt, and it can also effectively prevent outsiders from entering the company, ensuring the safety of the company and employees' property. It Can effectively track whether employees leave their posts without authorization. The attendance can be checked through the supporting attendance management software, without the need to buy a clock, the attendance results are more objective and fair, and the statistics are fast and accurate, which can greatly reduce the work intensity and workload of the personnel department. It can effectively solve the problem that some employees have to replace the door key for fear after leaving. You can conveniently and flexibly arrange anyone's authority and opening time for each door. You only need to take a card, without taking a large number of heavy keys, and the security is more reassuring than the keys. 2: Application of access control systems in the Community Generally, access control systems are installed on residential gates, fence gates, electric doors, iron doors, fire doors, and anti-theft doors of units. (you could choose locks for indoor use or outdoor use if, for outdoor, we recommend to take EL-W600 280KG IP65 waterproof version), It can effectively prevent idle people from entering the community, and conduct closed management of the community. It can change the inaccurate and imprecise management method of the community security who rely on memory to determine whether it is an inaccurate and inaccurate management method by outsiders. If it is a community owner, the new security guards will cause disgust from the owner. If outsiders are well dressed, the security guards may think they are the owners and do not interrogate them. This will also bring about safety hazards. A safe and scientific access control system can improve the quality of the property and is more conducive to developers to promote real estate. Owners will also benefit from scientific and effective access management. The networked access control facilitates the security to monitor the entry and exit of all gates at any time. If there is an accident or case, the entry and exit records can be inquired to provide evidence afterward. It can be combined with building intercom system and video intercom system. It can realize the all-in-one card with the internal consumption parking lot management of the community. 3: Application of access control in government offices It can effectively regulate the office order, can prevent illegal personnel from attacking government offices, and protect the personal safety of leaders. 4: Application of access control in the medical hospital system It can prevent outsiders from entering the infected area and precision equipment room. 5: Application of access control in telecom stations and power supply bu...

Read More
Network access control systems for Hotel management
Network access control systems for Hotel management

The hotel management network access control system is developed and designed by S4A in conjunction with the hotel industry. Its working mechanism is a Mifare card reader installed at the door of each room. When a guest checks in, the Receptionist will send the room number, check-in time, and check-out time through the card issuer (PCD-122 or MCI-109). Enter it into the software of the management, and authorized the cards according to the time and date then upload it to the control host. After the guest arrives at the door of the room, swipe the card on the card reader, it will read the ID number of the card and uploads it to the controller for permission confirmation, and then controls the electric lock to open the door, otherwise, the door cannot be opened. At the same time, the controller saves the door opening information. If the main console is in a "real-time" state, it will be transmitted to the computer control center at the main station via TCP communication, and the door opening information will be displayed on the computer in time. Such as a certain guest, certain time, opening a certain room, etc. The inductive IC card access management control system (referred to as the RFID access control system) has multiple functions such as door access control, real-time monitoring, attendance records, and security alarms. All these functions, you might check it via S4A access control software, It is mainly convenient for staff to enter and exit, and to prevent unauthorized staff to enter, which is convenient for management for all users.Author: Written by Mr.Andy Zhang from S4A INDUSTRIAL CO.,LIMITED

Read More
Electromagnetic locks application filed
Electromagnetic locks application filed

Electromagnetic locks are highly reliable, long-lasting units compared to other electric locking devices because there are no moving parts involved in their operation. They are also the staunchest of fail-safe units because there is no mechanism that can cause sticking and binding. The versatility of electromagnetic locks allows them to be used almost anywhere electric strikes and electric bolt locks are used, but with these feature advantages:Most secure deviceThe most fail-safe locks easily adapt to meet Fire Safety requirementsMost Durability – no moving parts, minimally effected by overvoltageMost Minimal maintenanceMosttWell adapted to poorly fitted or poorly hung doors Inner office door by a receptionist behind a window or desk. To release the door, he or she merely has to press a button under the desk, We need to configure the EB-19B button together. Applications as below: • Employees enter a workplace through a common door equipped with a card reader.• Dormitory room and bathroom applications where there can be privacy but someone has the authority to open in an emergency.• A laboratory room where at night the deadbolt can be thrown but in an emergency, the door can be unlocked• Electric lock is fail-safe and when the power of the building is cut, the designated doors are unlocked.• Nursing home rooms offering privacy but in an emergency, the door can be unlocked.Author: Written by S4A-Access from S4A INDUSTRIAL CO.,LIMITED

Read More
Application of RFID technology in the field of fire protection
Application of RFID technology in the field of fire protection

With the rapid development of urbanization in cities, large-scale construction of buildings, a large number of people entering and exiting activities every day, electric vehicles in the community, and the safety of residents' electricity use, fire safety is a very important concern. In a complex social environment, how to improve, innovate, and scientifically manage management models must make full use of various advanced scientific and technological means to enhance the service concept and quality of fire protection work. With the continuous advancement of science and technology, the gradual development of technical and hardware conditions, the rapid expansion of industrial scale, and the vigorous supervision of relevant departments, smart firefighting has emerged. Smart firefighting refers to the use of the Internet of Things, big data and other technical means to organically link firefighting facilities, socialized firefighting supervision and management, firefighting and rescue and other elements through Internet of Things information sensing and communication technologies to achieve real-time, dynamic, interactive, Integrated fire protection information collection, transmission and processing, comprehensively promote and improve the level of fire supervision and management, enhance the command, dispatch, decision-making and disposal capabilities of fire fighting and rescue, improve the intelligent and social level of fire management, and meet the "automation" of fire prevention and control , The actual needs of "intelligence" fire fighting and rescue command, "systematization" of daily law enforcement work, and "refined" military management, realize smart prevention and control, smart operations, smart law enforcement, and smart management, and create a "firewall" from the city to the home . Smart firefighting uses RFID technology to scan tags for daily fire prevention inspections by posting encrypted RFID radio frequency tags and establishing ID cards on key firefighting parts and firefighting facilities of the unit. In addition, the system will automatically prompt the inspection standards and methods of various fire-fighting facilities and key parts, and automatically record the inspection traces of inspectors, replacing the traditional paper inspection records. It has changed the status quo that traditional fire prevention inspections are not in place and inspection records are untrue. The maintenance and inspection of fire-fighting equipment is a major foundation of smart fire-fighting construction.Author: Written by S4A from S4A INDUSTRIAL CO.,LIMITED

Read More
Join us, become our overseas partner. we could create brilliance together.
GET A QUOTE
S4A Cooperated Partner

15 years of production experience.Support OEM and ODM orders.Welcome to visit and negotiate.

latest news

16 Years of S4A Factory Craft: Built by Our Team, Backed by Our Suppliers, Trusted by Our Clients
February 09, 2026
16 Years of S4A Factory Craft: Built by Our Team, Backed by Our Suppliers, Trusted by Our Clients

From the office, workshop floors of S4A’s factory, we’re pausing to mark our 16th anniversary—and we owe this milestone entirely to you:To our factory team: Thank you for the long shifts on production lines, precise checks on every access control component, and the quiet dedication that keeps our assembly bays running smoothly. You’re the hands that build the quality our partners rely on.To our trusted suppliers: Thank you for the timely deliveries of quality materials that keep our lines moving without hitches. Your reliability isn’t just a convenience—it’s the backbone of our ability to meet deadlines for our clients.To our valued clients: Thank you for choosing the products built right here in our factory, and for the feedback that pushes us to refine our craftsmanship. Every order you place, every detail you share, shapes how we grow—and we don’t take that trust lightly.16 years of making secure, reliable access solutions wouldn’t exist without this tight-knit network. Here’s to many more years of building, collaborating, and delivering what matters—together.

Read More
  • S4A 2026 Chinese Spring Festival Holiday Notice
    January 29, 2026
    S4A 2026 Chinese Spring Festival Holiday Notice

    Welcome to get to know S4A factory! We specialize in manufacturing a wide range of accessories for access control systems and automatic door units. Whether you're looking for cards, access control machines, or software, we've got you covered. Our one-stop procurement service means you can find all the corresponding hardware and software solutions right here, without the hassle of dealing with multiple suppliers. With 15 years of rich experience in production and operation, we have mastered the ins and outs of this field. We are proud to offer OEM and ODM services, tailored to meet your unique requirements. No matter how simple or complex your needs are, we are committed to providing you with high-quality products and professional services.We look forward to building a long - term and mutually beneficial relationship with you!Friendly ReminderPlease be informed of our company’s holiday arrangement for the 2026 Chinese Spring Festival as follows:Our factory will commence holiday from January 31st, 2026Our office will be closed starting February 7th,2026 (team building activities are scheduled for February 5th to 6th);All our business operations will resume fully on February 28th, 2026.During this period, our response to your inquiries may be slightly delayed due to the holiday schedule. Rest assured that we remain committed to serving you: you are welcome to leave us messages at any time, and we will get back to you promptly as soon as we have internet access.Thank you for your continuous support and understanding to S4A and our work. We appreciate your cooperation and wish you a joyful Spring Festival!Best regards,S4A Team

  • 16 Years of Expertise: S4A Kicks Off 2026 with Steady Turnstile Gate Orders
    February 10, 2026
    16 Years of Expertise: S4A Kicks Off 2026 with Steady Turnstile Gate Orders

    With 16 years of experience in the access control and security industry, S4A is no longer just a product manufacturer, but a trusted solution partner for its customers. Our core products – from access control panels supporting multi-protocol integration to fingerprint locks that seamlessly integrate with smart ecosystems – can be customized and optimized to meet our customers' individual needs. Our 16 years of industry experience allow us to better understand market pain points and how to create value for our customers with stable and efficient products. Choosing S4A means choosing a worry-free partnership experience.January 2026 has kicked off on a high note for us, as we recently secured a batch of Turnstile gate orders from one of our long-term partner clients. This encouraging start is a true reflection of the steady trust and recognition our Turnstile gate products have gained among our existing customer base.Daily, we receive at least one to two such Turnstile gate orders from our loyal clients—an ongoing testament to the reliability, quality, and performance of our products. These repeat orders not only highlight the strong cooperative relationships we have built over time but also underscore the market’s consistent demand for our Turnstile gates.We remain committed to delivering top-notch Turnstile gate solutions that meet and exceed our clients’ expectations, and we look forward to continuing this momentum of trust and collaboration throughout 2026.Again, I deeply appreciate your efforts and look forward to more opportunities to work with you. If need our support, pls contact as below:S4A INDUSTRIAL CO., LIMITEDContact Sales: Ms Anna ZhangTel:+86 755 29450011 EXT: 608Mob/whatsapp/Viber +86 134 10500721Skype:crypton0908Email: sales1@s4a-access.com

  • How does S4A solve the problems raised by customers?  TF2 Slow Card Enrollment
    February 09, 2026
    How does S4A solve the problems raised by customers? TF2 Slow Card Enrollment

     In response to the feedback regarding slow card enrollment on our TF2 access control device, we've taken immediate and concrete verification steps to demonstrate the product's standard performance. We randomly selected a fully assembled TF2 unit directly from our production line, alongside a normal ready-to-ship unit picked at random from our warehouse—both are 100% representative of our mass-produced TF2 devices that adhere to S4A's strict factory quality control standards (as outlined on s4a-access.com). We captured clear step-by-step photos and footage of the complete user card enrollment process on these two units, showcasing the TF2’s normal, standard response speed during this core operation.  I'm super excited and all set! If you have any questions or need help later on, just let me know right away. I'm here 24/7, eager to help you out and make sure you have a great time! If you wanna know more products or require any additional information, pls kindly contact us as below:S4A INDUSTRIAL CO.,LIMITEDContact Sales: Ms Anna ZhangTel:+86 755 29450011 EXT: 608Mob/whatsapp/Viber +86 134 10500721Skype:crypton0908Email: sales1@s4a-access.com

Contact Us
  S4A-Security For All.S4A Industrial Co., Limited, Founded in 2010, We have been dedicating in access control production R&D and sales for 10year till now. With the belief that we do one thing well in a lifetime, our CEO has been in this industry for 15 years. During the past 10 years, our products have been exported to various countries and regions. And 90% of customers come from the recommendations of cooperative customers, and 80% of the turnover comes from cooperative customers in the past 10years.Your business is a plant, we are the gardener, our mission is to water and fertilize the plant, and make it become the towering tree. We attach great importance to the partner's appeal, customer's suggestions, and feedbacks. To strengthen Product quality awareness, client's service awareness. Our clients and S4A are on the same path walking for many years.       S4A's future would be even more brilliant, this is related to all of our staff's working sweat. When you join this team, you will feel an invisible power to drive walk forward. S4A mainly produces a series of security Door Access Control such as:Network Access Controller, Locker board, Electromagnetic lock, Standalone door Controller, Automatic door opener, etcOur team can manufacture products, sell products, and do after-sales.In the realm of access control, one company stands out for its unwavering commitment to providing security services for everyone. S4A, which stands for "Security for All," has been at the forefront of access control technology for the past 13 years. With its own state-of-the-art factory and a strong focus on research and development, S4A has continuously delivered cutting-edge access control machines with the latest functions. Their dedication to product quality, customer feedback, practicability, and cost performance sets them apart as a leader in the industry.Factory and R&D Expertise:S4A takes pride in its fully-equipped factory, where skilled engineers and technicians work tirelessly to develop and manufacture access control solutions that meet the highest standards. The company's investment in research and development has resulted in a steady stream of innovative products that cater to evolving security needs.By staying ahead of the curve, S4A ensures that their customers have access to the latest advancements in access control technology.Quality Assurance and Customer Feedback:At S4A, product quality is of paramount importance. The company adheres to rigorous quality control procedures throughout the manufacturing process to guarantee the reliability and durability of their access control machines. Each product undergoes comprehensive testing to ensure it meets industry standards and exceeds customer expectations. S4A also places great value on customer feedback, actively seeking input to continuously improve their products and services. By listening to their customers, S4A maintains a customer-centric approach and delivers solutions that address real-world security challenges.Practicability and Cost Performance:S4A understands that access control solutions must not only be technologically advanced but also practical and cost-effective. The company's emphasis on practicability means that their products are designed to be user-friendly, easily integrated into existing systems, and adaptable to various environments. S4A's access control machines are known for their intuitive interfaces, simple installation processes, and seamless compatibility with other security systems. Additionally, S4A strives to provide cost-effective solutions without compromising on quality. Their competitive pricing ensures that security is accessible to businesses and individuals of all sizes.With 13 years of industry experience, S4A has cemented its position as a leading provider of access control solutions. Through their dedication to "Security for All," the company has set a benchmark for excellence in product quality, customer satisfaction,practicability, and cost performance. S4A's in-house factory and research and development capabilities enable them to stay at the forefront of technological advancements in the field of access control. As the company continues to evolve and innovate, S4A remains committed to empowering individuals and organizations with the highest level of security, ensuring that everyone can enjoy the peace of mind that comes with a reliable and efficient access control system.We can create value for you!Quality takes great importance for a company's credibility, and buyer's every penny spend must worth it. That is our most basic principle. Our business mainly for wholesale, so we could offer large quantities at competitive prices. During the past 10 years, We work hard to create value for our customers, and with our help, customers have an increasing market share. 99% of the customer...<
  • Address

    Factory Address:Building S4A, South Third Lane, Qiuyuling Street, Zhangkeng Village, Hengli Town, Dongguan City, Guangdong Province Office Address:#601,floor 6 ,building 1,JINFANGHUA industrial zone, Bantian St. Longgang Dist. Shenzhen, PRC.

  • Call us

    0086 755 29450011

Leave A Message

If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Leave A Message
Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Home

Products

about

contact