About Us
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.We can create value for you! 1-We put quality and price in top priorityQuality 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 customers who have cooperated with S4A will choose 2nd,3rd, and endless purchasing. because S4A not only controls the product quality very well, but the price is also very reasonable. As you can see, we have hundreds of products, but We do not produce all products. We adopt a portfolio strategy and invest in each factory. Because of the large export volume and the stable cooperation relationship with the factory, we can better control the quality and price of the products. Cooperate with us, you have no worries. In the past 10 years, more than 80% of our customers' sales have increased turnover by 15-20% every year. 2 -We have experienced and professional sales Our sales are not just sold products, we also help you choose products, do market research. Our company's top sales team all have more than 8 years of experience in the access control market, our team loves learning, loves sharing, good at summarizing, and dare to undertake responsibility. Because all of us regard the access control field as a career we love throughout our lives. At S4A, you can get a quick response and flexible support, and you can see our ability to solve problems. get professional guidance and recommendations, you don't have to worry about after-sales at all. Our task is: All emails must be replied within 2 hours at a working time!3-We have experienced and professional engineer S4A is equipped with 6 technical engineers for after-sales. and every year, We take out 20% of the net profit as research and development for new products, We all know Access control system is a kind of product with technical knowledge. When you have headaches such as unable to connect wires, Software compatibility issues or programming device, please remember S4A's after-sales support at any time. Our task is: All technical issues must be solved within 4 hours at a working time!4-Support OEM & ODM  All of our products accept OEM and ODM orders at a reasonable quantity. we help customers to promote their brand. We all know Access control is an increasingly popular industry. Based on past experience, we have found that customers who have just started to become distributors do not have a large number, but want to promote their own brands. For this kind of customer, we will also have a special application to do OEM for him. Because Support is mutual.5. S4A Vision Our Vision is to let all people in the whole world free their hands for keys, whether it is in poor areas or developed cities able to use access control.
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.

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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.

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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...

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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.

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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.

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The Solution for the Prison access card system
The Solution for the Prison access card system

With the development of access control systems, the one-card system is applied in more and more places. Recently, the access control card system also was widely used in the digital prison security system. Traditional card systems often have many security hazards in the complex security environment of prisons. How to eliminate these security hazards is what we have been doing.The prison card system generally consists of access control, attendance, patrol, and meeting management. Due to the particularity of the prison security environment. Here are some hidden dangers of traditional card systems: 1. Access control managementPrisons are places where prisoners are concentrated, so access control management has become a key part of prison security. Conventional access control functions have problems in some special situations.1)How to solve the security loophole at the prison gate?Between one gate (gate A) and the second gate (gate B) of the prison is the isolation zone where the prisoner contacts the outside world. If the two gates are open at the same time, the isolation zone loses its "isolation" function. It left hidden dangers for prisoners to escape. 2) How do prison guards respond when they are being held hostage?In prisons, when prisoners escape, they will often hold the guards and open the door to escape. In the face of this situation, how can we not only ensure the personal safety of prison guards but also promptly notify the staff on duty and activate emergency plans is a problem we must solve. 3)How to link with monitoring and alarm to keep safer?Access control is a part of prison security. It is obviously not enough to complete its own access control function. It must be well linked with monitoring and alarm to make access control management play a better role in security prevention. 2. Patrol management-how to ensure real-time data Traditional offline patrol data cannot be uploaded in real-time, which simply cannot meet the requirements in the prison security environment. The prison requires that patrol data must be uploaded in real-time, and at the same time, when the patrol fails to reach the designated patrol point due to an accident, an alarm must be issued to alert the duty officer. 3. Family meeting management-how to accurately verify the identity of family membersFamily meeting management is the window for prisoners to contact with others, and the security of the meeting must be ensured. Therefore, the identity verification of "family members" is particularly important. S4A access control's prison all-in-one card system solution In order to ensure the advancement and safety of the prison all-in-one card system, S4A access control's prison all-in-one card system has been specifically designed for the security environment of the prison. S4A access control integrates access control management, real-time access control records, and perimeter alarms. Eliminate the...

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Access control System in the parking lot
Access control System in the parking lot

S4A RFID UHF Long-Range vehicle access control system solutionNowadays the car ownership has begun to grow rapidly, How to conduct efficient, high-quality, and intelligent management of vehicles entering and exiting units has become more and more important. The RFID long-range vehicle access control system solution is at the forefront of the market and has high technical content. Through non-contact information collection and processing of long-distance fast-moving targets, rapid automatic identification and automatic management of incoming and outgoing vehicles are the best traditional management methods. In general, the system will significantly improve service quality and service level for users from the following aspects:1. Establish a brand new image of property management. The use of modern high-tech products will definitely greatly improve the image and popularity of the company's property management.Adopting intelligent parking lot management system, no matter from the aspect of product modeling, or the advancement and science brought by automatic management, it will establish a good image for property management and make the enterprise a model of scientific management.2. Enhanced safety management.One card, one vehicle, data archive, to ensure the safety of vehicles parked in the parking lot. After adopting the intelligent parking lot management system, the corresponding information of the entering and exiting vehicles are recorded in the computer, and the card can be reissued in time if the card is lost.3.Good anti-counterfeiting performance.The confidentiality of the UHF card is extremely high, and its encryption function is difficult to crack and not easy to forget.4. Durable and reliable, and the operation process is fully automated. The high-frequency card used in this system is maintenance-free, long service life, fully sealed, contact-free, dust-proof and waterproof, no need to manually open the gate, the system automatically reads, checks, and opens the gate, saving manpower and time. The system also solves the vehicle management problems faced by various units. It can be applied to the tracking control management of internal vehicles entering and leaving the unit gate, and can also be applied to the fully automatic and unattended management of internal parking lots. , It is especially suitable for occasions such as military vehicle entrance and exit gates, school gates, warehouse gates, and many company gates.Application SolutionThe system uses a long-distance radio frequency identification reader, and a UHF card pre-registered in the system is stuck or installed on each vehicle. When the UHF reader installed near the entrance and exit senses the UHF card, then it will transfer the Wiegand signal to the access control board. The access control board will judges the legitimacy of the card. If it is legal, the relay on the controller will act and drive the barrier to open, allowing vehicles to enter and exit, otherwi...

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Hot Products

These are the top 4 items in our factory in the past 2month with quality assurance.

Automatic Swing Door Opener
Electric Automatic Swing Door Opener

S4A Automatic Flat door systems with Pull arm or Push arm, support 110V  or 220V with a brushed motor 1. Power supply: 110V or 220V 2. Opening time: 3~7s / 90° 3. Opening and holding time: 1-30s 4. Protection level: IP12D

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Rfid Access Control Panel
Multi door Rfid Access Control Panel

Four-door Network access control board built-in TCP/IP, Support APP/4G/Web-server with free software.Connect 4pcs RFID access reader and 4pcs exit push button

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Fingerprint Access Controller
Fingerprint Touch-Screen Standalone access Control

> Card type: EM, HID, MF, CPU Card(Factory default: EM 125KHz)> Metal backlight keypad> User capacity: 10,000 users> Dimensions: 139x70x22mm> Waterproof IP68

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Keypad Access Control
Standalone Keypad Access Control

> Card type: EM, HID, MF, CPU Card(Factory default: EM 125KHz)> Metal backlight keypad> User capacity: 10,000 users> Dimensions: 135x47x23mm> Waterproof IP68

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Electromagnetic Lock
600lbs Electromagnetic Lock Holding Force for Access Control Single Door 12V and 24V

> LED, door sensor and time delay> Holding Force: 280KG (600Lbs)> Voltage: DC12V and DC24V> Lock Size: 250Lx48.5Wx25H(mm)> Current Draw: 12V/500mA 24V/250mA

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RFID Touch Access Control
Metal Outdoor Waterproof Keypad RFID Touch Access Control Reader

> Card type: EM or MF Card> Metal structure design, anti-vandal> Digital backlit keyboard> All-in-one, WG26 output/input> Three-way to open the door, card, password, card + password> The doorbell button and interface: buttons and isolation circuit, connect to any external bell

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Face Recognition Temperature Measurement System
Face Recognition Temperature Measurement System-Access Control Infrared Temperature Scanner Thermometer Attendance All-in-One controller

> Support Access Control & Time Attendance> Built-in Infrared camera> Abnormal temperature Alarm> Detect Distance: 0.3m~0.5m

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QR Code Reader
1D 2D QR Code Reader Programmable Auto Scan Barcode Reader

> ID 125KHz Cards+QR code (Wiegand 26/34output)> IC 13.56MHz Cards+QR code (Wiegand 26/34output)> Built-in TCP/IP and USB port

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latest news

Network Access control & Time attendance management system for the office
August 29, 2020
Network Access control & Time attendance management system for the office

1: Proposal presentation a: Someone broke into your office without permission.B: An unidentified person walks into your office and takes important files from your desk.C: There are so many doors that you have to carry heavy keys in the office.D:Unauthorized persons use multifunctional conference rooms and other places without authorization.E: People who enter important places such as financial offices without permission and so on... ... 2: System overview Induction IC card access control system (here in after referred to as door access control system), authorized users IN & OUT, real-time monitoring, security anti-theft alarm(we need to configure ACB-EA05 Enhanced Alarm Output and Integrated Fire) and other functions, it is mainly to facilitate internal employees, unrestricted access to eliminate external personnel, convenient for the internal management, and enhance the internal security, to provide users with an efficient and economic benefit of the working environment. It realizes the communication automation (CA), office automation (OA), and management automation (BA) in function, and realizes the comprehensive management of the communication system and office automation system comprehensively on the basis of the integrated wiring system and the computer network as the bridge. Door access control system as advanced technical prevention and management of high-tech means, in some economically developed countries and regions have been widely used in scientific research, industrial, museums, hotels, shopping mall, medical care, Banks, prisons, etc., because the system itself has concealment, timeliness and other characteristics, more and more widely applied in many fields. 3:Design principles The practicality of the system, System stability, System safety, System scalability, System maintainability, The advanced nature... 4: System function It is possible to establish a standardized management image for companies, buildings, or offices, improve management levels, and standardize internal management systems. A proximity card can replace all the door keys, and has different pass rights, authorizing the card to enter the door within the scope of its duties. All incoming and outgoing situations are recorded in the computer, which is convenient for inquiring about the time of specific events and implementing responsibilities. Unwelcome people can be shut out. For example, it can prevent salespersons in MLM, insurance, and other industries from breaking into your office without permission and disrupting your normal office order. Competitors in the same industry will not easily enter your office or development site and take away your business data or core technical data. If the employee’s proximity card is lost, you can report the loss immediately in the system, by S4A network access control board software, so that even if someone else finds the proximity card, they...

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  • Solutions for Bank and Savings office with access control system
    August 29, 2020
    Solutions for Bank and Savings office with access control system

    System Overview In response to the frequent occurrence of robbery and robbery cases in bank vaults and savings houses, in real life, vicious cases of bank robbery and money-carrying vehicles are no longer in Hong Kong and Taiwan film and television works. Security crimes are no longer confined to the original model and can be described as pervasive, which has also led to the advancement of security prevention methods. Safe work is increasingly important. In order to deal with various economic criminal crimes against bank vaults at this stage, protect the safety of the country and the people’s lives and property, guarantee the needs of national defense construction under the new technological situation, and ensure the normal operation of the bank’s daily work, high Scientific and technological means to prevent, stop crime and modernize national defense have become a consensus in the bank's security system. Banking is a distributed management industry. In addition to a complete monitoring and management system for the treasury, intelligent control of the entrance and exit is also a necessary means. The traditional mechanical door lock management has been completely unable to adapt to the development of life, in order to solve the security of the entrance to the financial system, To prevent the occurrence of potential hidden dangers, S4A Network access controller specially introduced solutions for the access control of financial system treasury and savings houses. The system comes with an anti-theft alarm function, which can form a complementary security scheme with the original professional anti-theft alarm of the bank. When the original system fails, this system can be used immediately. System stability Since the access control system is an uninterrupted long-term work system and is closely related to our normal life and work, the stability of the system is particularly important. The product system is required to have more than five years of successful application experience in the market, with a corresponding customer base and customer service system. Special function 1. Interlock function There are two doors in important passages of the bank, and the two doors are required to be interlocked to facilitate and effectively control trailing or orderly entry.When the first door is opened in a legal manner, if this door is not closed, the second door will not be opened; only after the first door is closed, the second door can be opened. In the same way, if the second door is not closed, the first door will not be opened by swiping the card. 2. Internal and external Dual card verification function It is also called "inside and outside verification to open the door" and "3+1 banking mode". One or more people outside the door must be present at the same time. After swiping the card, the information appears on the internal management computer. After the internal...

  • S4A Website Upgraded
    September 09, 2020
    S4A Website Upgraded

    After 5 months of hard work, the S4A website has been upgraded, The new website has added one more function-Products Application, We will update the projects and solutions provided by customers (these are all real project from all over the world), if you have any technical problems or need any solutions for access controller, you can communicate with our technical team at any time.S4A INDUSTRIAL CO.,LIMITED

  • Intelligent Residential Network access control management
    August 29, 2020
    Intelligent Residential Network access control management

    1. Proposal presentation Endless door-to-door salesmen disturb the normal living order of the residents in the community. When the security guards leave the guard booth for a short time, unknown people take the opportunity to enter the community. After the thief steals in the community, it is convenient to transfer or send the items out. The rioters broke into the community etc... Are you troubled by some tedious property management affairs? The intelligent inductive IC card residential access control management system (ACB series) can help you solve some of the tedious problems faced in property management, improve work efficiency, improve the community environment, and allow property managers to manage more easily and effectively, allowing owners and residents to Live in a safer and more orderly community environment. 2. System overview With the development of the social economy, various high-end residential communities have sprung up. How to meet the increasing requirements of residents for the living environment and how to manage communities or buildings reasonably, effectively, and safely? Under the conditions of rapid technological development today, there must be a set of new management methods suitable for the current development pattern. We have promptly and successfully provided the society with advanced, reliable, and effective solutions and management systems based on the international security protocol Wiegand bus technology combined inductive IC card and Philips RF card encryption technology. The inductive IC card access management control system (access control system ACB-001 ACB-002 ACB-004) can be expanded into a community card management system with modules such as the community inductive IC card consumption system and the inductive IC card parking lot management system with UHF-105 1-5M and UHF-115 5-15M UHF long-range reader. Along with the access control software, we also provide attendance management software suitable for property management personnel and security management, online patrol system suitable for security patrol supervision and management, fixed-rate dining management system, anti-theft alarm system used by important departments such as property management and finance, and property management Conference sign-in management system used by the department and owner committee. And so on, These all-in-one card management software that comes with the access control management system can help the property management department get super-value all-in-one card functions at no cost or less after installing the access control system. The inductive IC card access control system integrates computer technology, electronic technology, mechanical technology, magnetoelectric technology, and non-contact IC card technology, enabling a complete "dialogue" function between the card and the lock, and intelligently control the door lock Open, thus creating a new concept of acc...

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.We can create value for you! 1-We put quality and price in top priorityQuality 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 customers who have cooperated with S4A will choose 2nd,3rd, and endless purchasing. because S4A not only controls the product quality very well, but the price is also very reasonable. As you can see, we have hundreds of products, but We do not produce all products. We adopt a portfolio strategy and invest in each factory. Because of the large export volume and the stable cooperation relationship with the factory, we can better control the quality and price of the products. Cooperate with us, you have no worries. In the past 10 years, more than 80% of our customers' sales have increased turnover by 15-20% every year. 2 -We have experienced and professional sales Our sales are not just sold products, we also help you choose products, do market research. Our company's top sales team all have more than 8 years of experience in the access control market, our team loves learning, loves sharing, good at summarizing, and dare to undertake responsibility. Because all of us regard the access control field as a career we love throughout our lives. At S4A, you can get a quick response and flexible support, and you can see our ability to solve problems. get professional guidance and recommendations, you don't have to worry about after-sales at all. Our task is: All emails must be replied within 2 hours at a working time!3-We have experienced and professional engineer S4A is equipped with 6 technical engineers for after-sales. and every year, We take out 20% of the net profit as research and development for new products, We all know Access control system is a kind of product with technical knowledge. When you have headaches such as unable to connect wires, Software compatibility issues or programming device, please remember S4A's after-sales support at any time. Our task is: All technical issues must be solved within 4 hours at a working time!4-Support OEM & ODM  All of our products accept OEM and ODM orders at a reasonable quantity. we help customers to promote their brand. We all know Access control is an increasingly popular industry. Based on past experience, we have found that customers who have just started to become distributors do not have a large number, but want to promote their own brands. For this kind of customer, we will also have a special application to do OEM for him. Because Support is mutual.5. S4A Vision Our Vision is to let all people in the whole world free their hands for keys, whether it is in poor areas or developed cities able to use access control.<
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