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  • Q: 11) My finger is injured and cannot be recognized, what should I do?

  • A:

    Each lock can be registered with multiple fingerprints, for example, the Jianshu fingerprint lock can be registered with 1000 fingerprints, it is fine for everyone in the family to record all ten fingers in it. To be safe, don’t be lazy and record a few more. Fingerprints are always good.

  • Q: 12) If the fingerprint is copied, isn't it very insecure?

  • A:

    First of all, the technology of secretly collecting fingerprints is not common to ordinary people. At the same time, technology and equipment are only owned by the Public Security Bureau, and there is no need to worry too much about fingerprints being collected and copied. There are two types of fingerprint heads: optical and semiconductor. Semiconductor fingerprint heads belong to Live fingerprints, the collected fingerprint information will penetrate the epidermis. Therefore, even the chopped finger cannot verify the unlocking. The optical security level is lower. In theory, the fingerprint can be unlocked as long as the fingerprint image is the same. The lock needs to pay attention to whether the fingerprint lock is equipped with a semiconductor live fingerprint head or an optical fingerprint head.

  • Q: 13) How to distinguish between optical fingerprint head and semiconductor fingerprint head?

  • A:

    The surface of the optical fingerprint head is tempered glass. When fingerprints are taken, it will emit light, while the semiconductor live fingerprint head will not emit any light.

  • Q: 14) Smart locks are so powerful, why design key sockets like traditional mechanical locks?

  • A:

    According to national regulations for all electronic lock manufacturers, smart locks on the market must be equipped with mechanical keys. This is mainly from a safety perspective. It is mainly used to prevent emergency situations such as fires and other emergency situations. Mechanical keys will be more secure.

  • Q: 15) Why is it concealed after installing the key socket?

  • A:

    The key can only be used in a very special accidental state. Hiding the key socket not only makes the fingerprint lock more beautiful but also effectively avoids the use of the key socket to open the lock cylinder technically. The basic configuration of the fingerprint lock is the C-level lock core with the highest anti-theft level. The theoretical technical unlocking time is 270 minutes. The possibility of a thief who wants to unlock the room by technical unlocking is 0, but it is damaged in this way. The lock cylinder is unnecessary, so hide it if you can.

  • Q: 16) What are the differences between smart locks and traditional mechanical locks?

  • A:

    There is only one unlocking method for traditional mechanical locks with keys, and the loopholes caused by the keys, such as lost keys, trouble carrying a large number of keys, fear of being copied, etc., I believe everyone can experience it, and smart locks combine modernization High-tech, there are passwords, fingerprints, proximity cards, passwords and other door opening methods. Jianshu smart locks are still equipped with an NFC unlocking function. The mobile phone can be unlocked with the touch of the phone. It is very convenient and the use scene is not restricted. At the same time, the smart lock has internal Various alarm settings. When the smart lock encounters illegal actions such as technology or violence, the smart lock will immediately emit a loud alarm sound and push the alarm information to the user's mobile APP.

  • Q: 17) What if my finger cannot open the door?

  • A:

    The fingerprint lock is equipped with three-door opening methods, fingerprint, password, and key. If the fingerprint cannot be opened, the emergency password and emergency key can be used. The fingerprint circuit and password circuit in the fingerprint door lock are independent CPUs, and various functions are independent and intact to deal with your worries.

  • Q: 18)Why does the fingerprint lock have a display screen?

  • A:

    The display screen can provide an excellent display for each fingerprint entered. When the guest or the nanny leaves, the fingerprint of the corresponding number can be deleted directly to prevent the messy degree of deleting the fingerprint without the number. The fingerprint lock is usually the home priority The performance is a simple operation.

  • Q: 19) Access control fingerprint lock Why can't I log in and unlock by pressing my fingerprint?

  • A:

    Solution:

    1. Please log in to another finger fingerprint. Choose better quality fingers (fewer wrinkles, no skin, clear fingerprints).

    2. Try to make the finger contact with the collector a larger area and press the finger as flat as possible.

    3. The fingers are too dry and the scanner cannot detect them. You can wipe your forehead with your fingers first.

    4. Clean the fingerprint collection window.

    5. Log in as a user with a password.


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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:#601,floor 6 ,building 1,JINFANGHUA industrial zone, Bantian St. Longgang Dist. Shenzhen, PRC.

  • Call us

    0086 755 29450011

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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.

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