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With the popularity of smart devices and smart homes, smart locks have gradually replaced traditional door locks as the choice of more and more families. Compared with traditional door locks, smart locks are more convenient to use, have a higher safety factor, and have a more fashionable appearance. So how to choose a suitable china smart door lock?I want to give you eight important smart lock selection criteria, which are "lock cylinder level, unlocking method, fingerprint identification method, door opening method, power supply method and endurance, safety factor.1. Lock cylinder classAccording to the national standard, the common door lock cylinder in the market is mainly divided into three levels.Grade A, which means that the technical unlocking time shall not exceed 1 minute; Level B, which means that the technical unlocking time exceeds 5 minutesExceeding level B or level C means that the technical unlocking time needs more than 270 minutes.I suggest you choose the smart lock whose lock cylinder level reaches level C.2. Unlocking modeThe unlocking methods of smart lock china usually include "password, fingerprint, card swiping, panel identification, app and emergency key".In our daily use, the most commonly used way to unlock is password and fingerprint.3. Fingerprint identification methodI suggest that you choose the smart lock with semiconductor fingerprint identification, which has high fingerprint resolution, strong anti-counterfeiting ability and smaller size.4. Door opening modeThe semi-automatic intelligent lock can only be opened by pressing down the door handle after the password or fingerprint identification is successfully unlocked.The fully automatic intelligent lock can be opened by simply pushing the door after the password or fingerprint is unlocked.Under the condition of sufficient budget, I suggest you choose the fully automatic smart lock.5. Power supply mode and enduranceThe semi-automatic smart lock usually uses a dry battery, and its service life can be as long as 1 to 2 years.The fully automatic intelligent lock usually uses rechargeable lithium battery, and the endurance time is about half a year.6. Safety factorI suggest that when selecting an intelligent high end smart lock, you should focus on the security system of an intelligent lock, including virtual password, duress fingerprint, low battery alarm, abnormal alarm, etc., which should be the standard security performance of an intelligent lock.7. Brand and after salesAs the smart lock is related to our daily use and daily family safety, I suggest you choose a big brand with high professionalism and guaranteed after-sales service.8. Installation conditionsWhen you have selected a smart lock ready to place an order, you must contact the customer service to confirm whether the door lock has installation conditions.Some other additional functions can also add points to an intelligent smart door lock, such as anti small black box, cat eye anti-theft, etc.Today, we bring you Fuyu intelligent lock, which reaches the level C lock cylinder. Fuyu intelligent lock 6503, made of zinc alloy, 60*68 lock body, motor imported from Japan. Unlocking method: card, fingerprint, password and emergency key.

Why the fingerprint lock cannot be opened1. after autumn and winter, the weather is getting colder and drier, especially in the morning and on the beach. At this time, the skin on the surface of our fingers will become very dry, and the dry skin surface is very unfavorable to the collection of fingerprint images. If the image is not clear, the fingerprint features cannot be extracted naturally, so the fingerprint is not sensitive. Some people mistakenly think that the wholesale indoor fingerprint door lock is out of order, but this is not the case. In fact, it is very simple to solve this problem. Before inputting the fingerprint, you can put your finger on your mouth to breathe and make it moist, or wipe some hand cream to make your finger moist. In this way, you can solve the problem that the fingerprint cannot be opened because it is dry.2. the hands are not cleaned, and there are colored oil stains at the fingerprints, which is not conducive to the collection of fingerprint images. If the images are not clear, the characteristics of the fingerprints can not be extracted naturally, which leads to the inability to identify the fingerprints; In this case, just wash your hands3. fingerprint lock indicates that the door is unlocked but cannot be openedFinger injury or serious abrasion of fingerprint, resulting in blurred fingerprint, and fingerprint lock can not identify fingerprint; At this time, we will have to re collect and enter fingerprints. In addition, we can record more fingerprints of several fingers. If one finger is blurred, we can try more fingerprints4.the fingerprint lock has been used for a long time, and the battery equipped with the fingerprint door lock has no power, which makes the fingerprint lock unable to work normally; The battery runs out. Just replace the batteryFingerprint lock indicates that the door is unlocked but cannot be openedThe fingerprint lock indicates that the door is unlocked but the door cannot be opened. Firstly, the battery of the fingerprint lock may be low. The user can replace the battery and try again. In addition, it may also be caused by the problem of the fingerprint lock motor. At this time, you can directly contact the fingerprint security door lock manufacturer or after-sales service. If the motor fails, you can repair or replace it.What if the fingerprint lock is dead1. How to open the door when the smart lock has no power through USB emergency power supply? Generally, the smart lock has a USB that can be charged. However, it is difficult for most mobile phones to be played by everyone all day. Therefore, many people will carry USB and power bank with them. I have to say this is a good habit. At the lower end of the front panel of the smart lock, there is a ∪ sb power supply hole, which can be used for emergency power supply through the power bank and can be used to open the door.2.the emergency mechanical key is usually provided with the emergency mechanical key for opening the smart lock. If the smart lock china is powered off, it is necessary to open the door with the emergency mechanical key. The key hole of the smart lock is either in the middle lower part of the front panel or at the bottom of the front panel. When using the smart lock, you should remember to put the emergency key in the office, in the car or in a good neighbor.How to change the battery of electronic fingerprint lockA battery box is installed on the back of the china fingerprint security door lock, which can be opened directly. The appropriate number of batteries can be correctly installed into the battery box according to the positive and negative poles. When the battery is powered on, a dripping sound prompt will be sent, indicating that the replacement is successful. If you are away from home for a long time and the fingerprint lock is used less frequently, it is recommended to prepare the emergency batteryFingerprint lock key failure◆ the keys of fingerprint lock do not respondMost of the reason for this is that the fingerprint lock has no power. Just replace the battery. The fingerprint lock will give a low-voltage alarm when the power is almost exhausted. If there is a low-voltage alarm, replace the battery quickly. Normally, the battery of fingerprint lock can be used for more than a year! But sometimes when we use it for half a year or a year, remember to open the battery cover to see if the power is sufficient◆ insensitive fingerprint lockThis is related to the fingerprint recognition rate. If it is a normal fingerprint, it can certainly be recognized, but it is difficult to recognize a shallow or broken fingerprint. It is recommended to use a fingerprint door lock with high recognition◆ fingerprint lock display screen does not light up1. the power of fingerprint password lock is insufficient, which may cause this situation. The solution requires replacing the battery.2. the fingerprint password lock battery is in poor contact. The solution is to use the standby power supply to unlock the door lock system or use the mechanical key to unlock the door, and then reinstall the battery to ensure normal power on3. the above operations are invalid. Please contact the local seller or manufacturer for maintenance immediately◆ what if the fingerprint lock flashes1. the power of fingerprint electronic code lock is insufficient, which may cause this situation. The battery needs to be replaced, or the battery contact is poor. The backup battery can be used to start the door lock system to unlock or the mechanical key can be used to open the door3.if the above operation is invalid, please contact the local agent immediately to repair the goods and contact the manufacturer.◆ fingerprint lock login timeoutIf the position of the fingers is not standard, the fingers are placed too late or the external light is too strong, operate again according to the procedure.◆ fingerprint lock handle is looseUse a cross screwdriver and pointed nose pliers to adjust the screws and pressing ring nuts in the handle hole. It is recommended to press down the handle while fine-tuning to feel the force until the force is appropriate.◆ what if the fingerprint lock handle does not reboundInsert the key into the lock hole. Rotate back and forth, and lift the door handle up with the other hand. If the key is inserted into the lock hole and cannot be screwed, it indicates that there is a problem with the lock cylinder. At this time, use a thin hairpin to stretch into the lock cylinder, and turn it up, down, left and right for several times. Repeat this for several times to rebound. Be careful not to turn off the key during repeated screwing. When using the anti-theft door, the opening and closing force should not be too large, which is easy to damage the door handle.

What if the door lock doesn't openDoor locks used on doors, steel doors, aluminum alloy doors and plastic doors. The main feature is that it can be locked from the inside and cannot be opened from the outside. The most frequently used occasions are room lock, bathroom privacy lock, toilet lock, etc. because these occasions involve privacy, you can't open the door at will from the outside, but you can open it at will in the room to avoid rabbits from locking out. In fact, most of the room door lock structure (bedroom door lock structure) uses circular locks.What if the bedroom door lock doesn't open?Method 1: it refers to the emergency treatment when the secure bedroom door lock cannot be opened due to foreign matters stuck in the door lock. Generally, there is a foreign object stuck in the door lock, which cannot be inserted with a key or finger. Even if it is inserted, it is difficult to open it. In this case, it is necessary to find a way to unlock the door. First, determine whether the door is opened inward or outward. If it is opened inward, pull it inward. If it is opened outward, push it inwardMethod 2: at this time, we need a sharp and thin knife. The sharper the knife point, the better. First, hold the door from the outside of the toilet door. The middle part that can shrink is also called the lock shaft. Do not contact the lock shaft with the lock slot to reduce friction. Insert the lock shaft through the sharp knife λ At the gap of the lock, push the lock shaft against the lock shaft and apply force to the free direction of the lock shaft. Maybe it can't be opened once or twice. It's still necessary to try several times. Maybe it can be openedMethod 3: generally, the door lock cannot be opened due to external force, perhaps because the lock tongue inside is unhooked, or the lock tongue distorts its shape, and the screws used to fix the lock tongue fall off, resulting in the door being stuck, unable to get out or enter. In this case, the best emergency treatment is to find the lock tongue and pull the fallen screws back from the door seam for positioning. This method is only limited to the case that the door lock cannot be opened due to external forceMethod 4: the first method is to open the door by yourself when the door cannot be opened. In addition, if you can't unlock the door after using all kinds of methods, you can ask a professional unlocking company to unlock the door. Such unlocking companies generally have professional and unlocking technologies, but they just have to spend some money out of their own pocketsMethod 5: asking a locksmith to unlock may be the same as asking a locksmith to unlock, but there are some differences in essence. Professional door lock company can professionally solve all kinds of difficult and miscellaneous problems that lock the door can not be opened, which is a one-dimensional realization. However, locksmiths can solve the simple problem that simple door locks can not be opened, which is an individualized realityWhat if the anti-theft door lock doesn't open?1. the anti-theft door lock is hard to openWhen it is difficult for the key to get in and out of the zinc alloy lock hole, go to the counter selling lighters in the small commodity market to buy a box of kerosene with the smallest package. There is a sharp mouth on the box. Press the sharp mouth against the lock hole for a few times, and the kerosene will go into the hole. Then take the key to unlock the lock. The key can get in and out of the lock hole smoothly. The volatility of kerosene is strong. There is no need to worry that there is grease in the lock hole in the future, and the performance of the lock will be affected again after a long time, It didn't take long for the kerosene to evaporate, and the door lock was restored as new. If kerosene doesn't work, the internal structure of the lock cylinder may be damaged. You can only go to the lock repairman. In addition, remember that kerosene can be used to lubricate the lock hole. Other oils such as edible oil, gasoline, diesel, etc. can't be used. It's convenient and easy to use. Just use any kind of oil, which can only contaminate more dust, which is harmful to the door lock2. the anti-theft door lock does not rotateA. Generally speaking, the key cannot be pulled out because it is not in the right position. Some of them are caused by the dislocation of the anti theft door lock cylinder. When a part of the lock cylinder pops out after it is returned, you can press it with your hand, and the key can be pulled out by moving the other hand;b. When the lock cylinder spring is stuck, spray the universal lubricating rust remover into the lock hole, and try to pull out the movable key; You can also pour pencil ink into the lock hole, move the key, and then try to pull it out;C. Find a security door maintenance and lock changing master to open it for you3.Security door key cannot be pulled outa. Use leather care agent, spray it on the key, and the key will be easily pulled out, leaving pencil ink and lubricant. Mechanical gadgets can get stuck sometimesb. Screw it to the end in the direction that can be screwed, then quickly screw it back, press it in hard, and it will come out after a turnc. If we still can't pull it out, we can try to see if the direction is correct. If we still can't pull it out. You can ask the locksmith for help

Due to the emergence of smart locks, the daily life experience at home has become more convenient and faster. Many people choose to install smart locks for apartments. However, some people are used to mechanical locks and can not accept the emergence of intelligent locks for a while. They still think that traditional mechanical locks are safer than intelligent locks!With regard to security, how to choose between intelligent lock and mechanical lock?1. Reasons for purchasing smart door locks:First, the emergence of smart lock china has brought good news to forgetful consumers. Because you don't have to bring a bunch of keys when you go out, and you don't have to worry about losing the keys. You can easily open the door when you go home just by fingerprint recognition or face recognition.If a thief pries the door, the wholesale smart lock will give an alarm to scare off the thief. At this point, the traditional mechanical lock is far less than the intelligent lock.Finally, after installing the mechanical lock and intelligent lock on the door of the home, there will be a big difference on the whole. The appearance of mechanical digital lock is generally single; There are many styles of smart locks in design. Consumers can choose their favorite smart lock products according to their own aesthetic concepts. After installation, they also look very high-end and grand!For businesses who want to buy smart locks and want to experience a safer and more convenient home life than before, they can pay more attention to better brand businesses in the market.At present, Fuyu intelligent lock factory is selling three types of intelligent lock products： automatic face recognition lock, fingerprint lock and password lock. All of them have passed the safety certification of China's national public security department in terms of safety and quality assurance, so you can choose to start at ease.2. Reasons for purchasing mechanical lock:At present, there are still many people who are used to using mechanical locks and are not easy to make changes. They feel that the hype of mechanical door lock is simple and relatively safe. They can still continue to use mechanical locks. Although we still have to go out with the key and always pay attention to whether the key is still on us, it does not affect the needs of such people.3. In terms of safety performance, which is stronger, intelligent lock or mechanical lock?Security is the most essential for a door lock. Even without many advanced functions, as long as the safety is strong enough, it can still ensure the safety of daily home life; On the contrary, if the security is not up to standard, even more advanced functions will be flashy!The most direct and critical factor determining whether the door lock is safe or not is the lock cylinder. According to the lock cylinder grades on the market given by the national public security department, there are A-level lock cylinder, B-level lock cylinder and C-level lock cylinder. Among the three levels of lock cylinders, class C lock cylinder is the most secure. Even if the lock is unlocked by technical means, it will take at least 270 minutes. In terms of the purchase choice of door locks, it is recommended that door lock consumers identify the door lock products with C-level lock cylinder.For smart lock: you don't have to carry the key when you go out, so you don't have to worry about the subsequent problems. You just need to use fingerprint, password, face and other convenient ways to unlock the door when you go home. In addition, there are real-time on-site, remote alarm and auxiliary functions on mobile app and applet. Compared with mechanical door lock system, there are many kinds of protection, which is safer, faster, time-saving and worry-saving!