[Introduction]

In this world, 1% of people are always honest, they will not steal; 1% of people are always dishonest, and they will try to steal; Another 98% of people are relatively honest. When they are tempted enough, they will become dishonest. This is human nature. Under the framework of law, locking is a kind of binding behavior, which binds the 1% truly honest and 98% relatively honest people. For the remaining 1% of dishonest people, locks are always just props to guard against gentlemen rather than villains.

Basic Knowledge

The burglary has caused great social hidden dangers and property losses to social security and people's property safety, which is also one of the key areas of the public security organs to crack down in recent years. As far as the burglary cases are concerned, the burglary of technical unlocking occupies a large proportion. Generally, the first to third floors are more likely to be climbed into the house (mainly from the kitchen window), so most people choose to install anti-theft nets, anti climbing stabs, etc. as the main means; For those above the second floor (mainly above the fourth floor), technical unlocking is more likely. Generally speaking, there are more "cross shaped" and "straight shaped" door lock cylinders, but as the "skill" of unlocking gradually improves, the patterns are constantly renovated. Compared with the past gum unlocking, "they" prefer to use professional unlocking tools. The common forms of unlocking mainly include opening the "straight" lock cylinder with stuffing; Open the "cross" lock cylinder with the "cross" lock opener; Use special tools to open the magnetic anti-theft door lock, etc.

[How to prevent theft]

We have adopted different methods on the anti-theft problem of technical unlocking. Most people will install household anti-theft alarm, replace super B or even C anti-theft door locks, and unlock the door. In terms of ordinary anti-theft, the door lock in the home can prevent most technical unlocking as long as the handle cannot be pressed down from the outside and can only be lifted up. For anti technical unlocking, the best way is to lock the door. Once the door is locked, even violent unlocking takes at least 15 minutes, which is the highest level anti-theft lock at present. However, although the level of this anti lock is high, it is only limited to the premise that someone is at home.

[Working Principle of Smart Door Latch]

This is a snail housekeeper smart door latch launched by Beijing Chuangchuang Future Technology Co., Ltd. After it is installed on the anti-theft door without replacing the lock cylinder, the small key and mobile phone APP are used outside the door to drive and rotate the anti lock button in the home, so as to realize the function of locking the door even if no one is in the home, and make the anti-theft level suddenly burst.

[Video]

[Question]

I always feel that it is really a "risky" thing to lock the security door when no one is at home. After all, my family lives on the fifth floor. Once it loses its function, climbing the building is definitely impossible. The only thing we can do is to find a lock company to remove the lock violently. This smart latch is currently in the first trial run on Leifeng. com, and interested partners may wish to leave such a question and experience it together.

Packaging

Drawer style packaging is adopted. A red paper tube is set outside the khaki hard paper box, with white words of snail housekeeper and logo printed on the front, and a smart latch and brief function introduction printed on the side.

After opening the package, as shown in the figure below, it is the whole of Snail Housekeeper Smart Door Latch. It includes 1 latch, 1 fixed base, 4 Xiaomi No. 5 batteries, 2 keys, operation and installation instructions.

[Overall appearance]

The latch has four colors: gold, silver, blue and red. The one in Rufeng's hand is red. There is a round key on the front of the latch. A short press will open or close the anti lock button, and a long press will add or remove the snail key. The extension of the switch has a circle of LED light bars, which will flash lights of different colors on/off and in pairing, with a size of 156 * 40 * 40mm.

The whole body of the latch uses red and black as the main colors, which is relatively fashionable. There is a red square button on both sides of the black main body of the fuselage, which is mainly used for fixed connection and disassembly with the fixed base.

The shell is made of plastic material, with round corners and a matching design of arc and edge lines, which has an industrial aesthetic feeling. The connection between red and black is also very fine, without burrs.

At the bottom of the latch, in the middle of the black and red connection, there is a black gear (adjusting the balance base handwheel), which is mainly used for lifting the balance base. After the door latch is installed on the anti-theft door, the balance is ensured by lifting the balance base.

[Back structure]

On the back, the structure is relatively rich, mainly composed of the anti lock button fitting button, No. 5 battery slot, sound chamber, direction switch, balance base, etc.

Structural map.

Its back is made of black plastic and printed with product name, manufacturer and other relevant information. The battery compartment cover is provided with a sound hole; The fitting button of the anti lock button and the battery compartment cover can be removed; The direction switch in the battery slot can adjust the rotation direction of the anti lock button fitting button.

The balance base is magnetic and can be absorbed on the anti-theft door after installation. On the balance base, there are square black anti-skid rubber pads, which mainly play the role of anti-skid. After the balance base is adsorbed on the anti-theft door, it can further ensure that it will not slide, making it more stable.

Local

In the actual use process, you can manually rotate the anti lock button adapter button through coins and other hard objects to keep it horizontal. At the same time, the anti lock button of the anti-theft door should also be kept horizontal, and then you can clip the adapter button on the anti lock button. The fitting button supports the anti lock button less than 25 * 8mm. If it exceeds this specification, it cannot be used. Therefore, it can be applied to most families' anti-theft door anti lock button.

By rotating the hand wheel, the balance base can be raised or lowered to achieve installation balance.

Internal Structure

In the battery slot, four No. 5 batteries can be installed. In this trial, "Start Future" delivered four No. 5 batteries produced by Xiaomi. The sound chamber and direction switch can be seen in the battery slot.

Pinch the two sides of the adapter button to remove it.

The fixed base is equipped with 3M glue. When using, pass the fixed base through the anti lock button, paste it on the anti-theft door handle, and then buckle the door latch with the fixed base, as shown in the following figure. Press and hold the red square buttons on both sides of the latch to separate the latch from the fixed base. In the cold north, the stickiness of 3M glue may decline. It is recommended to stick the fixed base on the anti-theft door for a period of time before using it.

[Application of APP]

Three locking methods are adopted for the door latch. One is to open and close the door latch by directly pressing the round button briefly indoors; The second is to open or close the door latch through the key outside; The third is to switch through the mobile phone APP. On the premise that there is no small key, the mobile APP also has the effect of "small key". Take the Android system as an example. When using the smart latch for the first time, you need to open Bluetooth and activate the new latch at the same time.

The connection process between the APP and the door latch is also very simple. You can pair with Bluetooth when you open it. Bluetooth adopts TI's top Bluetooth 4.0 chip. The connection between the APP and the door latch is not automatic. Instead, click the round icon in the APP to connect when it needs to be used. This method can ensure low power consumption, but there is also a problem. Sometimes, the connection cannot be made, and it needs to be clicked two or three times before it can be connected to the latch.

[APP Application Scenario]

When the APP is connected to the door latch, the words "Door not locked" or "Door locked" will appear. The round icon is white, indicating that it is not locked, and the red icon indicates that it is locked.

As shown in the figure below, put the anti lock button through the fixed base, tear off the 3M adhesive and fix it. During installation, the anti lock button shall be kept at a horizontal angle, and the matching button shall also be rotated to a horizontal angle with a coin. The two buttons can be buckled together.

When getting the latch for the first time, click the APP icon to unlock or close the lock, and you will see that the adapter button rotates about 2 and a half circles counterclockwise or clockwise, that is, 900 degrees, while the anti lock button on the anti-theft door can only rotate 90 degrees from horizontal to vertical. There is no need to worry about this situation. When the adapter button of the latch is clamped on the anti lock button, the adapter button will be blocked to a certain extent, that is, as long as the anti lock button is turned from the horizontal to the vertical position, the adapter button will automatically stop rotating. At the same time, the sound chamber will give a prompt of "the door is locked". On the contrary, the effect is the same, and the prompt of "the door is open" will be given at the same time. After fastening the door latch with the fixed base, rotate the handwheel to balance the base.

[Precautions]

It uses four No. 5 batteries for power supply, which can effectively work for 500 days continuously. When the power is low, it will timely remind partners to replace the battery every time the door is opened. If some partners are away on business for a long time, the standby time of the latch can be up to 5 years. If the battery is low and the battery has not been replaced all the time, the latch will be opened after 50 times of low power operation or 5 days later, and the service life of the whole machine can be up to 100000 times.

The reason why it can automatically open at low power is that the smart latch is a dual hardware, dual chip system. Once the main hardware fails, the slave hardware will open the door. In other words, its biggest advantage is not that it can drive the closing anti lock button without anyone, but that it can automatically drive the opening anti lock button in case of possible faults. In this way, we can answer the questions left before. This bolt is worth taking a chance.

The latch used in this trial can only support 4 No. 5 batteries. According to the manufacturer, a backup power supply will be added in the later period, even leaving room for direct plug-in power supply. The battery life problem can be completely solved. In terms of OAD upgrade, the official version can be upgraded remotely, while the trial version can only be upgraded in the factory.

[APP Interface]

This smart latch supports Android and iOS systems. At present, the iOS system is still under review, and I believe it will be available in time. When using APP to connect with the latch, it is the first time to use Android APP to activate the latch. The use process is also very simple and convenient. After downloading the snail butler app, register and log in, click the icon to search and connect. The process is not cumbersome.

There is a feedback channel in the APP, through which partners can give feedback on problems, and it is also a reward feedback. The interface is very intuitive. When using, you need to click the icon to connect. After connecting, you can click it to lock it, and then click it again to open it.

In the setting interface, you can modify the user name, such as latch 1, latch 2, and other marks. Of course, this nickname modification is applicable to partners in multiple houses. Generally, one security door in one house is enough; You can choose to turn on or off voice prompts according to your personal preferences, or you can choose to turn on or off the automatic locking function.

[Key application scenario]

Compared with mobile APP, the key function is simpler and faster. When pairing, press the round button on the latch for more than 3 seconds. According to the voice prompt, click the snail key (the blue light flashes) to pair successfully, or pair multiple keys.

The snail key adopts Micro USB interface, which can be recharged and has low power consumption. When charging, the red indicator light will be on at the button, and the full charge will display orange yellow (close to yellow). In the actual two-day test, it was found that the functional effect of the key reached 100%. I used two keys to control it separately. For example, after the yellow key was unlocked, pressing the blue key would close it, otherwise the effect would be the same. Also, when the key and the latch are kept for 10 minutes, 30 minutes, and 1 hour respectively, and when the key and the latch are far away from each other, they return to click. There is no click and no response, and both the key and the latch are dead. Compared with the function and effect of APP, the click function of APP needs to be improved.

[Summary and Suggestions]

The biggest feature of this smart door latch is that when the smart door latch is closed, not only can it be unlocked outside the door, but even indoors, when the door handle is pressed directly, the anti lock button can also not be opened (when the door latch is not installed, the anti lock button will automatically open when the door handle is pressed directly). The anti lock button can only be opened by pressing the round switch again. Its appearance is fashionable and its workmanship is exquisite; In terms of function, it drives the anti lock button of the anti-theft lock, which can prevent 100% technical unlocking, thus ending the "technical unlocking brick"; It can be used in three ways: direct button opening, snail key opening and mobile phone APP Bluetooth opening; The anti-theft function is realized without changing the door or the lock cylinder, and the cost is lower.

In actual use, it is found that the APP still needs to be improved. Sometimes it needs to click several times to connect with the latch successfully. Occasionally, after the connection is successful, clicking the icon to close/open the door lock does not respond. It is recommended to add magnets to the fixed base; The anti slip mat on the balance base can cover the whole base; Fixed time unlocking/locking function is added in APP; When considering adding a gateway to realize remote control, it can match more home smart package interfaces. Taking Xiaomi smart home package as an example, when sensing that the door is closed, the door latch will automatically unlock.

According to my personal understanding, the advantage of this smart door latch is not that it can drive the closing anti lock button when no one is at home, but that it can automatically drive the opening anti lock button in case of possible failure. Through a week of continuous testing, no functional failures such as "crash" have been found. In this way, as a "more adventurous" snail housekeeper, it is really worth our choosing to use it to do such an "adventurous" thing for family safety.