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  • Q: 28) The automatic door cannot be opened or opened even manually?

  • A:

    1. [Cause of failure] There is an obstacle in the door guide. Or get stuck by obstacles.


    [Solution] Please turn off the power and remove obstacles.


    2. [Cause of failure] The door has been locked.


    [Solution] Please turn off the power and unlock.


  • Q: 29) The door cannot be closed after the automatic door is opened.

  • A:

    1.[Cause of failure] There is an obstacle in the guide rail. Or get stuck by obstacles.


    [Solution] Please turn off the power and remove obstacles.


    2. [Cause of failure] Start sensor or auxiliary sensor keeps running.


    [Solution] Please clear the object that the sensor is detecting.


  • Q: 30) How to use automatic doors safely?

  • A:

    Automatic doors and operators are designed and developed based on our policy of "Safety and comfort for all users." However, unexpected troubles can occur if the doors are used in the wrong way.


    In order to use our automatic doors safely, please read our instructions carefully and understand the structure and how they work before using them. Also, please put our automatic door stickers on your doors for attention. 


  • Q: 31) Can the automatic door be opened when the power is off?

  • A:

    Although this depends on the size of the door, a general-purpose door can be opened with a force of about 100N (10.2 kg) or less.


    In addition, if you add an optional emergency opening device, the door can be opened automatically when the power fails.


  • Q: 32) Can I open the automatic door in case of a power outage?

  • A:

    Standard automatic doors can be opened by hand with less than 100N (10.2kgf)

  • Q: 33) Why is the reaction of automatic door leaf slow?

  • A:

    1. It may be that the detection range of the sensor is small, and the detection distance of the sensor head can be adjusted

    2. There is dust inside the sensor, just clean it.

    3. The weight of the door body exceeds the bearing range of the moving motor of the door machine, which can also cause this phenomenon.


  • Q: 34) Why does the automatic door body keep opening and closing automatically?

  • A:

    1. Check the sensing probe to see if the sensing range of the sensing probe is large. In the case of a large range, the sensing range of the sensing probe is also large, and other moving objects may be detected, causing the door to keep running.

    2. Check whether the sensor probe is adjusted too downward. If the sensor probe is installed too downward, the sensor will sense the moving door when the door is running, which will mistakenly think that the object is moving, so that it runs repeatedly.

    3. Check whether there are strong electric waves near the door. Strong electric waves will also cause the sensor to be disturbed and trigger some malfunctions.

    4. Check whether the cover is loose. Looseness will cause the cover to shake, and the shake of the cover will also cause the sensor to shake, and the sensor will also cause misoperation.


  • Q: 35) Automatic door stops running or does not move.

  • A:

    1. Check whether the spreader pulley of the door body falls off the track. If it falls, the door machine will not move. This kind of problem is generally caused by an external force collision.


    2. Check whether the door body is falling or mopping the floor. If these problems are found, the door body will be difficult to start, and the door machine protection device will mistakenly think that there is an obstruction and trigger the safety protection function to stop the door body.


    3. Pay attention to whether the "safety light" is installed. If there is dust on the receiver of the "safety light", it will cause malfunction. It is considered that there is an object between the door bodies to stop the door from running.


  • Q: 36) Press the remote control to normally close the door does not close?

  • A:

    Normally open and normally closed direction is wrong, adjust the direction, adjust the direction of equipment K1

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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:2nd Floor of Jinmin'an Industrial Zone, #529, Bulong Rd. Bantian St. Longgang Dist. Shenzhen, PRC.

  • Call us

    0086 755 29450011

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