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Access Control Card Reader Common Fault Analysis And Solution

April 07 , 2023

The access control card reader is an important part of the access control system and the key equipment for the signal input of the access control system. If the access control system is compared to a person, the card reader is like the human eye, which is related to the stability of the entire access control system. If there is a problem with the quality of an access control card reader, it will cause the door to fail to open, which will affect the acceptance and use of the project. Below, I will introduce the common faults and solutions of access control card readers.



The card reader sends out electromagnetic waves at a fixed frequency, the frequency is generally 13.56MHZ. When the proximity card enters the electromagnetic wave radiation range of the card reader, it will trigger the coil on the proximity card, generate current, and trigger the antenna on the proximity card to read the card. The reader emits a signal, which contains card information. The card reader converts the level signal into a digital serial number and sends it to the local controller. The local controller uploads the information to the upper controller and finally uploads it to the access control server. The server compares the card number with the information in the database to obtain all card information.


If the access control card reader cannot read the card, should check whether the power supply is working properly? Check if the card reader is damaged. Check whether there is strong magnetic interference around the card reader. If the above steps are eliminated and the card reader still does not read the card, then the following reasons can be considered:

Access Control Reader

1. The card reader will generate some static electricity after being used for a period of time. The accumulation of static electricity will cause excessive power consumption. The shorter the usage time, the faster the aging of the card reader. Before installation, you should choose a special power supply with good quality and high power. If this happens after use, separate the power supply for the electric lock and the card reader, and add another power supply to power the card reader separately.


2. If the card reader is installed on a metal because the metal has a shielding function, part of the radio wave emitted by the card reader is shielded by the metal.


3. If the card is swiped in and out, the same problem will occur if the distance between the two card readers is too close. The two card readers emit radio waves at the same time, and the radio waves interfere with each other, which will cause slow card reading, and the card will not be read if they are too close.


The quality of the access control system is not only related to the safety of the community but also affects people's normal life. Therefore, daily care and inspection of the access control system can effectively reduce the probability of accidents.



Author: Written by Anna Zhang from S4A INDUSTRIAL CO., LIMITED



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  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...<
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    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.

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