It is finally that time of the year when the industry starts wrapping up and reflecting on the year we've had – and what a rollercoaster of a year it was for many of us. After a strong start in 2022, it seems that in the second half of the year, many of us are starting to feel the pinch of spending growth slowing amidst global economic uncertainty.To say it wasn't easy would probably be a massive understatement for many of us in the industry. Unfortunately, as the new realities of the world post-COVID-19 kicks in, we hope the new year definitely allows you a new fresh start, and wish for only bigger and brighter things for you and your family. This is our company's holiday notice. 14th,Jan to 28th,Jan,2023Resume back to work on 29th, Jan 2023Thank you very much for your continued support and trust in S4AThank you for an amazing 2022, and see you in 2023!

1. Classification of electric Dropbolt LockElectric Dropbolt Lock can be divided into two-wire, five-wire, eight-wire, etc.; according to different use occasions, such as five-wire, eight-wire and other multi-wire electricDropbolt Lock basically have the function of door magnetic signal detection. In some access control systems, users need to see the real-time opening and closing status of the door on the access control software interface, then they need to choose this electric mortise lock with door magnetic signal detection.2. How to judge the quality of electric Dropbolt Lock?1. When you get the electric dropbolt lock, check whether the surface of the lock body has obvious scratches, and the lock body should have a metallic luster.2. After the power is turned on and the power is turned on for a long time, whether the surface of the lock body is hot, whether the bolt of the electric mortise lock is fully ejected, and whether the bolt springs back forcefully after pressing the bolt.3. Whether the Dropbolt Lock is an ultra-low temperature electric lock, so that the Dropbolt Lock will not get hot during repeated operation, thereby prolonging the service life of the electric Dropbolt Lock.4. Whether the electric Dropbolt Lock has an anti-intrusion circuit design. Some electric Dropbolt Lock on the market are locked by magnetic induction. When the magnetic force artificially disappears or the magnetic force is weakened, the latch springs back to unlock. At the actual installation site, there is a certain gap between the small magnetic plate and the lock body of the electric Dropbolt Lock. Once the magnetic force between the magnetic plate and the lock body is blocked by a small object, the lock body will automatically open because it does not sense the magnetic force. deadbolt. This kind of electric Dropbolt Lock will inevitably have certain security risks. The electric Dropbolt Lock with anti-intrusion circuit protection is locked by sensing the magnetic force of the small magnetic sheet. Once the electric mortise lock is locked, the electric mortise lock can only be opened by receiving the door opening signal or power off. Because of the presence or absence of the magnetic force of the small magnetic sheet, the safety of the Dropbolt Lock is affected.Author: Written by Ms.He from S4A INDUSTRIAL CO., LIMITED

Dear All S4A Valuable Partners：S4A factory mainly produces access control and automatic door opener.Thank you very much for your continued support of our company.Please kindly be informed that S4A for the The Mid-Autumn Festival,as below:Holiday in Aug,2022 from S4AFromToResume backTotal10th,Sep12nd,Sep,13rd,Oct3days offIf you have any technical questions, please call us directly.Tel: 0086 755 29450011

In recent years, with the development of technology, smart home has long since bid farewell to the concept, appearing in every corner of the home. For example: sweeping robots, smart speakers, smart TVs, Remote gate controller,infrared switches...There are many kinds of intelligent products, and many times tricks and gimmicks take the place of the role. The core of smart products should be to serve life and facilitate different social roles and occasions.In fact, S4A already has products in the field of smart home, but we have been adhering to the principle of low-key and calm, and have been making products silently without excessive publicity.S4A Automatic Swing Gate Openers is a driver (drive device) composed of intelligent motor, speed change mechanism and nylon silent transmission system.Under what circumstances will an automatic sliding gate openers be used?At first glance, the gate opening kit seems to be far away from us, but in daily life, when you open the door with something in your hand, when you just wash your hands and enter the door, pay attention to the quality of life and enjoy the intelligent experience, especially when the boss wants to open the door (after all, the door If someone opens the door, how can the office door be opened in person)......Of course, it is also a life helper for the elderly and people with limited mobility.In addition to being easy to use, the ED200 and ED300 also have the following features: Which is the stronger opening posture:You can use the remote control to open, the button to open, the radar to open, and even a kick (kick switch)200,000 door opening testsIn other words, if you use it 10 times a day, you can use it for 55 years.1 hour to complete the installationIt only takes 1 episode of American drama to install it and start using it.Back to the original question, why do you want to produce the remote control gate opener? S4A has more than 20 years of experience in the field of access control systems and solutions. Due to the various requirements of users for opening doors, there are automatic swing door openers.What kind of gate opener system is good? How to make the door opener match the door reasonably? Which door type is more suitable for installing a door operator? How to meet the needs of using functions and opening doors at the same time?With these questions, we have done a lot of research and tests to understand the use experience, and only have this S4A ED100,ED200 and ED300 automatic door openerOnly those who do access control know how to open the door.

Our factory has 15 years experience in magnetic lock production.Whether it is the low-end market, the terminal market, or the high-end market, our company has corresponding magnetic locks to meet your different needs.Of course quality is based on cost. mini Magnetic locks should be identified from various technical indicators. Standard qualified magnetic lock door generally provide two input voltages of 12V and 24V (the difference between single coil and double coil) for time delay magnetic lock, They are selected and switched by jumpers. There are several ways to judge the pros and cons of a magnetic lock:Here,S4A company's engineers have summarized 15 related knowledge for your reference.1. Circuit board: The inferior magnetic lock can be judged from the circuit board. The inferior magnetic lock circuit board has rough printing and extremely simple layout. A set of voltage inputs.2. Measure the resistance: first unplug the 12V and 24V switching jumpers of the magnetic lock (note: no power is required), generally there are 4 binding posts (at the jumper), measure the red and black lines, the resistance is at Preferably around 50 ohms.3. Measure the current value after power-on: After the magnetic lock is connected to 12V voltage, the current value is measured, and the one that matches the marked value is better. 280KG (600 lbs) magnetic lock is generally better at 400-450 mA. If it is less than 450 mA, it is not enough to pull; if the voltage is 24V, the marked value or actual value should be 200 mA.4. Insulation value: The insulation value of the lock body of a standard qualified magnetic lock should be infinite, and the specific value should be more than 50 megohms; the specific test position is the cut steel sheet and the output line of the lock body.5. Perpendicularity of the cut steel sheet: In principle, the cut steel sheet should be touched or stained with hands as little as possible. The perpendicularity and parallelism of the qualified magnetic lock cut steel sheet should be as standard as possible. The quality of the electroplating of the cut steel sheet depends on whether there are oxidation marks on the cut steel sheet.6. Glue inspection: There should be no air bubbles in the colloid of the magnetic lock, it should be flat and neat, without cracks, and the angle is square.7. The distance between the cut steel pieces: the main concern is that the thickness of the cut steel pieces should be 0.35mm, which is the best. At present, most of the steel cut pieces on the market use 0.5mm cut steel pieces; the tighter the arrangement of the cut steel pieces on the lock body, the better , Pay attention to observe that there is no glue leakage in the arrangement of the cut steel sheets.8. No residual magnetism: Generally, the cleats of magnetic locks are made of pure iron, but most of the cleats are 99% pure iron, so they must have the function of removing residual magnetism, and are equipped with protruding rubber pads to play a buffering r...

With the improvement of people's living standards, people's requirements for access control system are getting higher and higher.Since 2021, a large number of access control machines with APP have emerged in the market.Previously, if you wanted to open the door through an APP, you needed to connect an APP module from a third party.But now we can directly embedded the module Inside the ready-made access control machine. At present, the two hottest apps on the market, the first one is tuya app.The second is TTlock app.tuya apps generally use WiFi, while TT lock apps generally use Bluetooth.But with more and more concerns ,such as :can you open the door remotely?What if a visitor comes? In fact, the latest access control machine with APP can solve these problems you are worried about. What are the advantages of the access control machine with APP? 1. Mobile phone access control has short opening time.2. The success rate of opening the door of mobile phone is high.3. Compared with the previous access control, the mobile phone access control greatly improves the security.4. There are various ways to open door by mobile phone access control.5. Mobile phone access control is easy to install. Bluetooth transmission can realize long-distance reading of the device at a distance of 10 meters, which means that the owner only needs to sense the device within the range to automatically authorize the door opening system, which is smart and fast. 6. It has a dynamic door opening password, which is convenient for visitors to open the door.7. It can prevent thieves from opening door.8. Someone open the door and feedback to the mobile APP.Improve security.9. Nowadays,You may forget to bring your keys, but you will never forget to bring your mobile phones.In line with the current way of life. Moreover, the current access control system with APP is also very cheap.such as S4A T series and TF series. Some only have the functions of swiping cards and passwords, some have the functions of fingerprint plus swiping cards and passwords, and some only have the functions of swiping cards. If you have any interest, please feel free to contact me. If you buy a machine, please contact me after sales.The Best Excellence of the Year award was given to our mouse.Written by Ms.Vivian He from S4A INDUSTRIAL CO.,LIMITED

Dear S4A Valued Partners,We hope this notice finds you in good health and high spirits. We would like to inform you of an upcoming holiday, the Dragon Boat Festival, which will be observed on 22nd, June,2023In celebration of this traditional Chinese festival, our company will be closed from 22nd to 24th, June 2023 The Dragon Boat Festival is a time for families and friends to come together, pay respects to ancestors, and enjoy cultural activities such as dragon boat races and eating zongzi (sticky rice dumplings).During this holiday, we encourage you to take some time off, recharge, and spend quality time with your loved ones. It is essential to prioritize rest and relaxation to ensure a healthy work-life balance.Please make the necessary arrangements to complete any pending tasks or projects before the holiday begins. If you require assistance or have any concerns, kindly reach out by email or phone:Email: sales@s4a-access.com  Phone: 0086 134 1050 0721 (All urgent technical issues are resolved within two hours)We will resume normal operations on 26th, June 2023, and your presence and dedication will be highly appreciated as we return to work.We wish you all a joyful and memorable Dragon Boat Festival. May this holiday bring you happiness, good fortune, and a renewed sense of energy. Thank you for your continued hard work and commitment to our company's success.Best regards,S4A Industrial Co.Limited

In the past two days, three electromagnetic locks have been processed in a row. The three locks look at the same shape. The circuit board can be divided into three grades, A Grade S4A magnetic lock , B, and C at a glance. No result, C-level this often kills the access control host .Standard qualified magnetic locks (Like S4A brand) generally provide two input voltages of 12V and 24V (the difference between single coil and double coil), which are selected and switched by jumpers. There are several ways to judge the pros and cons of a magnetic lock:(1)   Look at the circuit board(2)   Measuring resistance(3)   Measure the current value after power-on(4)   Insulation value(5)   The verticality of the cut steel sheet(6)   Glue inspection(7)   The distance of the cut steel sheet(8)   No residual magnetism(9)   4007 diode(10) Process treatment of lock body shell(11) High and low pressure(12) Acidity test(13) Finish(14) Lock body electroplating(15) Output line1. Look at the circuit boardThe inferior magnetic lock can be judged from the circuit board. The inferior magnetic lock circuit board has rough printing and very simple layout. It does not use varistors (that is, surge devices, generally there are two), and there is only one set of voltage input.2. Measuring resistanceFirst unplug the 12V and 24V switching jumpers of the magnetic lock (note: no power is required), there are generally 4 binding posts (at the jumper), measure the red and black lines, and the resistance is about 50 ohms. good.3. Measure the current value after power-onAfter the magnetic lock is connected to 12V voltage, the current value is measured, and the one that matches the marked value is better. 280KG (600 lbs) magnetic lock is generally better at 400-450 mA. If it is less than 450 mA, it is not enough to pull; if the voltage is 24V, the marked or actual value should be 200 mA.4. Insulation valueThe insulation value of the lock body of a standard qualified magnetic lock should be infinite, and the specific value should be more than 50 megohms; the specific test position is the cut steel sheet and the lock body output line (any one).5. The verticality of the cut steel sheetIn principle, the cut steel piece should be touched or stained with hands as little as possible. The perpendicularity and parallelism of the qualified magnetic lock cut steel piece should be as standard as possible. The quality of the electroplating of the cut steel sheet depends on whether there are oxidation marks on the cut steel sheet.6. Glue inspectionThe colloid of the magnetic lock should not have bubbles(Reference S4A Magnetic Lock), it should be flat and neat, without cracks, and the angle should be square.7. The distance of the cut steel sheetThe main concern is that the thickness of the cut steel should be 0.35mm. At present, most of the cut steel on the market use 0.5mm cut steel; the tighter the arrangement o...

How to install the L,Z,U bracket of the magnetic lock?Many customers are not sure if their own doors need brackets, or what brackets to choose.After ordering, can they install it themselves?According to the usual communication with customers, we have sorted out the relevant questions of customers, and hope that this article has the answers you want.If you need more detailed information, you can email or call us directly.Email: sales@s4a-access.com  or Call: +86 755 29450011       a. First put the L1 bracket in the Z&L bracket on the position where the lock is installed, and fix it on the door frame or wall with self-tapping screws.       b. Use a hexagonal wrench to lock the lock body on the L1 bracket.       c. Fix the Z2 bracket on the door corresponding to the position of the L1 bracket.       d. Insert the follower iron plate into the three holes of Z1 for false fixation, and then close the door to make the magnet and the follower iron plate fit tightly, and determine the connection position of Z1 and Z2 for the single door magnetic lock(The relative position of Z1 and Z2 can be adjusted according to the thickness of the door)      e. Tighten Z1 and Z2, and then fix the follower iron plate on Z1 with M8*25 hexagon socket head screws (insert the screw, iron plate, washer and rubber washer in sequence).       f. If it is a double door magnetic lock system, two Z&L brackets can be used. Buried (built-in) installation method The buried installation method of the inner door and the outer door are the same. The slot, the lock can be embedded and then the screw can be locked, and the general construction personnel will install the lock when they see the lock.The frame of the aluminum alloy door is generally hollow. For this feature, we have designed two installation methods.      A. Wood lining method: Put a suitable size of wood in the door frame for lining, and then lock the screws. This method is convenient to obtain materials and simple to install. This method is mostly used in actual installations.      B. Using the installation accessories method: This method is to use the accessories (four-hole iron plate + U-shaped iron) provided by us to make the installation easier. Installation Precautions When doing flush installation, make sure that the size of the door stop is slightly larger than the size of the selected lock.  Glass door installation method 1. Installation method of glass door with aluminum alloy (or other materials) framed glass door for embedded installation generally can use FG-600 or UB-600 series magnetic door lock, which is unique to our S4A company and most suitable for installation in glass door The lock on the door, whether your door is inward-opening or outward-opening, double-opening free door can be installed. The installation method is the same as the embedded ...