preface

Everyone may be familiar with the "doorbell", because most families have this "little thing" installed on or near the door. Although this "little thing" is not very impressive, it plays a very important role! With "it", it is not only convenient for others, but also convenient for yourself. When relatives, friends or strangers come to visit, they no longer have to hit the door with their fists, which makes people feel numb and uncomfortable. If you start lightly, people inside may not hear you; It's not only a shock to knock people's arms and numb, but also it may cause unnecessary trouble to the neighbors. When it comes to "it", Xiao Bian thinks that most people are still unfamiliar with "it". Why do you say that? How many of you have paid attention to it? Every time we meet it, we just "shake hands". Sometimes we don't even "shake hands". We just touch it gently with a "finger". It is silent and you are speechless. To it, we are just passers-by, and to us, it is just a tool. In retrospect, there are not many kinds of doorbells in my impression. As an ancient point, it can only be seen in old movies in the past: there is a rope outside the house, and the bell is placed inside the house. People outside need to visit and pull the rope outside; More modern, some are directly installed on the anti-theft door, and some are separately installed on the wall beside the door. When someone outside presses the button, people inside the house can hear the sound of the doorbell, which is basically electronic and needs batteries; More advanced is the visual doorbell. When people outside press the outside button, people inside can not only hear the bell, but also see the appearance of people outside. Recently on“ Lei Feng Love to play computer games On the trial, I saw a "linbell G4 self generating wireless doorbell" was applying for a trial activity. I couldn't help but mutter "Hey, this doorbell is a bit strange". Why do you say that? Because it is beyond my previous impression of it. So I carefully reviewed the introduction and wrote the application reason without hesitation. Unexpectedly, I was still favored by the "audit staff who love computer trial" and gave me this precious trial evaluation qualification, Here I would like to deeply thank "Lei Feng likes to try out computers and its staff", as well as the provider of this product, "Wuhan LinkedIn Technology Co., Ltd.". Well, no matter how sincere my thanks are, it's hard to express them all in words, but just keep them in mind. Don't say more. Let me lead you to enjoy this "strange doorbell"!

Unpacking

1、 Packaging design

In general, the quality of a product can be seen from its packaging design. Of course, there are many exceptions. In this era when the world of fake goods is flying around and boastful advertisements are bombarded, even if you have the ability to discern pearls, it is inevitable that your horse will not stumble. As the saying goes, "always walk by the river, and you will never get your feet wet." It is better for you to tear them down step by step! After getting this product, first of all, the design of the outer packing box gave me the impression of "simple and simple". How to put it? The design of the entire packaging box consists of three parts: the outer packaging paper cover, the packaging box, and the product slot in the box. The packaging box is cut, folded and pasted with cardboard. The color is dark yellow+light yellow. Some relevant information about the product is printed on the outermost packaging paper cover. Let's use photos to show you intuitively!

Although there is no exquisite packaging design and gorgeous color performance, the packaging box of "linbell G4 self generating wireless doorbell" gives me a good feeling. It is simple and sincere, and the "four square and four upright" packaging box looks strong. It's a pity to discard it, but it can be used to pack small things in the home.

Suggestion: It can be sealed with plastic film outside the packing box to avoid being contaminated by water or other things during transportation, which will affect the appearance. After all, it is paper packaging, and the transportation process cannot be fully controlled, so it is inevitable to encounter the situation of being infected.

2、 Product composition

After opening the packaging box, we can see that the product mainly consists of the following parts: doorbell transmitter, doorbell receiver, double-sided adhesive tape for installation, expansion screw for installation, and instructions.

From the perspective of product configuration combination, there is nothing particularly complicated, on the contrary, it is very simple, all are basic configurations.

At this point, the unpacking part is basically finished, so don't talk much nonsense, and move on to the next link "Product Practice".

Product practical operation experience

1、 Product design and workmanship

The design of "linbell G4 self generating wireless doorbell" adopts a split design, and the wireless transmitter and receiver are independent individuals. From the front, the transmitter looks like a small rectangular box, and from the back, it looks like a small box embedded in a large box, and the bottom shell can be disassembled. The overall size is 83m * 46mm * 20mm, and the weight is only 45g. From the front, the receiver looks like a small rectangular box, but from the back, it looks like a strange plug. The overall size is 83mm * 48mm * 23.5mm, and the weight is only 59g. The transmitter and receiver are all white, and the shell is made of plastic. From the perspective of workmanship, it is not bad, and the surface is relatively smooth. However, the front panel of the receiver and the lower main body are not tightly sealed, and gaps can be seen from the edge.

In general, the design of the product left me a lot of questions and curiosity. There is no battery in the transmitter. How do they work with such a design? Then let's continue to look down!

2、 Product structure and principle

The "linbell G4 self generating wireless doorbell" is composed of two independent individuals, the transmitter and the receiver, so we should also explain their structures separately.

1. Transmitter structure and principle

For the structure of the transmitter, we may not see anything from the appearance. In order to further understand its internal structure, we can only take it apart. After a while, I didn't understand how to take it apart. Let's forget it. I will find the answer from the official data. As shown below

Disassembly drawing of kinetic energy generator

The small kinetic energy generator module contains 13 parts, of which the coil diameter is only 0.1mm and the length is 13m

Fixed by snap

Encapsulates all moving parts as a whole, facilitating secondary development and utilization

2. Receiver structure

The structure of the receiver is relatively simple. It is mainly a sound generating device. As follows:

From the above structure and schematic diagram, I think you can clearly understand its magic and mystery. It mainly uses an important "Faraday's law of electromagnetic induction" in physics to turn kinetic energy into electric energy, which makes this strange guy become a guy who can work permanently without batteries, and also makes us no longer worry about how to deal with waste batteries and change batteries. Did you think of the important physics law of children's shoes? We all learned it in high school. It doesn't matter if we didn't think of it. I didn't think of it, either. Ha ha!

All right, the above questions have been solved. Let's continue to read!

3、 Product operation experience

In this part, I will tell you in two parts:

Part I: Product Installation

How to install the product? With this question in mind, we should not hesitate to read the "product manual" carefully. This little fellow should have no objection. This is common sense! From the pamphlet of the manual, we can see that the above description is very detailed.

Receiver installation (the doorbell will ring and the indicator will flash when the power is just plugged in)

Note: It is recommended that the receiver should be more than 50cm above the ground. Too close to the ground will affect the signal strength.

Transmitter installation

Method 1: If the wall is clean and flat, stick one side of the 3M double-sided adhesive tape directly to the back of the radiator and the other side directly to the wall (not too low from the ground, but not too high, to ensure that adults can easily reach the normal height).

Method 2: If the wall is dusted off, first remove the back bottom shell of the transmitter with a screwdriver, fix the bottom shell on the wall with the equipped screw bar, and then buckle the transmitter into the bottom shell.

Part II: Product Operation

After the product installation is ready, we can start the product operation. Of course, before installing the product, we can first conduct some necessary tests on the product to ensure that all functions of the product are free of problems before installation, so as to prevent the product from being disassembled after installation if it is found to have problems. Before operation, please read the instruction booklet, which describes how to operate in detail.

Press the doorbell transmitter, we can hear the doorbell ring and the indicator light starts flashing. The small knitting machine has been tested in different rooms for a long distance indoors. The signal transmission distance is very long, and the signal penetration is also very strong. The product parameter specification says that the indoor transmission distance is about 30 meters, and the outdoor transmission distance is about 80 meters. The test results of the small knitting machine are similar. (The demonstration video is only for reference)

Can I adjust the size of the ring tone? Xiao Bian can solemnly tell you: Yes. There are two green buttons on the front of the receiver (actually a whole). We just need to press the "volume button" with three vertical bars on the left, which is the same as the signal strength displayed on our mobile phone, to adjust the ring tone. There are four volume gears: maximum, medium, minimum and mute. What we want to say here is that the volume set each time will be memorized. Even if the power is reconnected, the last set value will be memorized instead of restoring the default value.

Can music be switched? Answer: Yes. We just need to briefly press the "Music key" on the right side of the front of the receiver to cycle through 16 pieces of music.

How to add/delete a pair code? See the instructions below for details:

summary

After a period of trial, this "linbell G4 self generating wireless doorbell" gives me a very good feeling overall. I summarized the following points for your reference:

1. The product is full of science and technology, and its service life is unlimited. LinkedIn has creatively developed a "kinetic energy generator" based on the "Tesla's law of electromagnetic induction" in physics. This not only gives this law a new life, but also allows this product to completely get rid of the inconvenience of batteries, and can be used permanently, while also being environmentally friendly.

2. The signal transmission distance is far, and the penetration is strong. Through the code matching, it can flexibly realize one to many and many to one, which can not only meet the transmission needs of simple buildings, but also meet the transmission needs of complex buildings.

3. There are many kinds of ringtones, which can meet the interests and hobbies of different people.

4. The whole body is white, which can be well matched with buildings to achieve harmony and unity.

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