3cm trigger alarm low power wifi smart door magnetic review

1 Low power consumption wifi smart door magnet.　　

    It is the end of the year again, and thefts are at their peak. Have you taken security measures at home? If you have amnesia and don't know whether you have locked the doors and windows when you go out, in addition to using your brain, you also need a little assistant to remind you to close the windows and lock the doors when you leave home.

　　An intelligent door magnet can remind you the status of the doors and windows in your home (open or closed). When you are more than 120m away from the door magnet, the system will automatically send an alarm message to remind you to close the windows and lock the doors. People with "obsessive-compulsive disorder" also need this device, so you don't have to worry about whether the windows in your home are closed.

3cm trigger alarm low power wifi smart door magnetic review

　　Although smart door magnets are not an important part of smart home systems, this Dingding door magnet appears in front of everyone as a future concept. The product uses low-power WiFi technology and can last for 3 months on a single charge, truly achieving power-free and zero-cost installation of smart devices; it has multiple alarm prompts and can also turn on the do not disturb mode.

Dingding door magnetic set

　　Although it is called smart door magnet, this product can be used on windows, drawers or other devices you need to monitor. According to the installation rules, the main body (the larger one) needs to be fixed on the door frame, and the magnetic column (the smaller one) is attached to the movable door panel. In the following content, the author uses drawers and doors as examples to demonstrate the performance of this device.

　　Smart door magnet composition

　　Dingding smart door magnet is very small in size. You do not need to purchase a host separately when purchasing this door magnet. Its packing list includes a charging data cable, a magnetic body and a permanent magnet. A magnet is embedded in the permanent magnet, and the core component in the body is a clarinet.

Smart door magnet body and permanent magnet (click to see larger image)

　　When the permanent magnet is close to the clarinet to form a magnetic field and magnetize the reed, the reed's contacts will be attracted by the magnetic force, and the device is in a closed (door closed) state; on the contrary, when an external force forces them to separate, the magnetic force decreases, the reed's elastic force opens, and the device is in an open (door open) state. The above is the working principle of the main switch of the wifi module.

    Supported platforms: Android, iOS

2 3cm push alarm information.

    Is Dingding Door Magnetic Sensor a smart product with good quality and low price? Through actual testing, the author found that when the distance between the door magnetic body and the magnetic column exceeds 3cm, an alarm message will be sent to the mobile phone. The sensitivity is high. After repeated testing 10 times, it was found that there was no missed alarm phenomenon.

When the main body is separated from the permanent magnet by more than 3cm, an alarm message will be sent

　　Door and drawer actual environment test

　　To make it more realistic, I will demonstrate it in a real environment. With the above experience, I actually simulated one of the environments. When the door gap is opened by 3cm, the door magnet will trigger the alarm. If the thief wants to enter within 3cm, I am afraid he will have to lose weight first.

Door Test

　　If the door is replaced with a drawer, can the money be prevented from being stolen? According to the above test, when the author opened the drawer by nearly 3cm, the alarm was not triggered. Although the hand can be inserted, it is obviously difficult to do it without being noticed.

Drawer Test

　　The actual environment test also made me realize that although the door magnet can be used in drawers, doors and even safes, the alarm distance can actually be made more accurate due to different actual environments. Take the home safe as an example. If some relatively small gold jewelry is installed in it, a 3cm gap can also steal a lot of things.

There is no additional charge for SMS and phone calls

　　 199 yuan all-inclusive service

　　After testing, it is not difficult to see that the product performance is indeed remarkable, so what about the price? Dingding door sensor is priced at 199 yuan, which can be considered "cheap" among many smart home products. It does not require the installation of a SIM card, and there is no service fee even for sending push alarm information or calling the owner back.

     Location service reminds you to close doors and windows

     "Amnesiacs" look here. If you leave your window open when you leave home, the Dingding Door Magnetic App has a positioning function. When the distance between you and the device exceeds about 120 meters (currently the shortest distance), the system will automatically send an alarm message. If combined with the door magnetic alarm, you can remotely control the window closing, saving you the process of climbing stairs. Since this function is not available now, the decision is yours. If you don't want to leave a chance for thieves, go home and close the window!

3 Zero-cost installation and simple operation mode.

         As I mentioned at the beginning of the article, this smart door sensor uses low-power wifi technology and supports charging. It can be used for about 3 months at full charge, and each charge takes about 3 hours. It has a standard Mirco USB interface, which is very convenient. In addition to being based on low-power wifi technology, it can be directly fixed on the threshold with 3M glue. The main body is equipped with a bracket, which is convenient for taking it off the door and charging it at any time.

 
Smart door magnet registration steps

     The operation of the door magnet is also very simple. It needs to be bound to the mobile phone when used for the first time. Press and hold the main button for more than 3 seconds. When the prompt light turns blue, you can log in to the APP to register. After entering the correct wifi password, the binding is successful. As long as the client is not untied, there is no need to pair it for the second use when the battery is exhausted.

Screenshot of the APP operation interface

     One APP can bind multiple door sensors, and the names can be edited according to different usage locations. Supports three alarm modes: phone, push, and no alarm. Considering that there are people at home on weekends, you can turn on the do not disturb mode. When you are at home, you can set the corresponding time, and opening the door during this time period will not trigger an alarm.

Red is not working, blue is working It is difficult to judge the working status except when it is triggered

     Editor's comment: Dingding smart door magnet can be installed on the door without affecting the aesthetics. It can solve some safety problems in daily life and is a smart device that is both interesting and practical. If it can be linked with doors and windows to close in the future, it can be considered a perfect smart home product.

     Advantages: Sensitive alarm

      Easy to install and operate

      Lightweight and thin

     Disadvantages: Lack of working status indicator light (working status is obtained from the APP, there is no corresponding indicator light)

      There is a delay in synchronizing the APP status with the actual door magnetic status