Speaking of the doorbell, everyone thinks of an allusion: to hide one's ears and steal the bell. It shows that doorbell has a history in China. The ancient doorbell was just a kind of bell, and the sound was single, which might lead to the situation of knocking a bell and opening the door around. Only those rich families can afford to use the "automatic doorbell" -- wait, I'll report to the master! Similar to the current visual doorbell, it is also intelligent, but it needs to pay labor costs. The doorbell has developed into various doorbells, but it basically follows the rule of wired doorbell → wireless battery doorbell → wireless self generating doorbell. The advantage of self generating doorbell is that the battery money needed for the button is paid by the labor of the entrant, but the power of the receiver has to be supplied by itself. I hope to develop a doorbell that can generate electricity by itself next time. So, today we are testing a new generation of self generating wireless doorbell linbellG4 produced by LinkedIn Technology.

According to the award-winning speech routine, I would like to thank the country first for providing a stable and united environment and a stable job. I would like to thank the developer for building a house, allowing me to buy a house and install it on the door. Finally, thanks Love to play computer games Thanks to Lei Feng.com, who has obtained the application qualification among thousands of applicants. thank you very much! So, let's take a look at the latest linbell G4 doorbell!

（1） Open box experience

When we are shopping, are we fed up with the "seller show", especially the clothes? It's a world of difference for me. So, I especially like to watch the "buyer show", which can really restore its essence. Let's show the "buyer show" together.

The outer package of linbellG4 is made of wood pulp and printed directly. It is fresh, not greasy, and simple. Personally, I prefer it!

The two lines of small words on the outer package fully reflect the support of LinkedIn Technology for environmental protection, and also meet its identity characteristics that self generating wireless doorbell can reduce battery environmental pollution. I will give him a "like" for every detail!

Opening the outer package, we can see that the arrangement of internal products is also simple and clear. It can be said that everything can be collected at a glance, without unnecessary packaging.

Receiver (speaker) separate photo

Proximity view of transmitter

The transmitter and receiver are made of very good materials and feel very good. It feels heavy when held in the hand. Although it is plastic, it uses a frosted surface, which does not feel cheap. This is a good job!

List of accessories

In terms of accessories, the manufacturer is not careless. It uses 3M double-sided adhesive tape, which is full of materials for expansion wire.

The manufacturer also reserved a hole for installing expansion wire on both sides in a humanized way, which can make it more firmly fixed on the wall or door.

Through the unpacking experience, in general, the manufacturer has taken care of every detail, which fully reflects the humanized design of the product.

（2） Product experience

For lazy people like me, the free expansion silk can be used as long as it can be used. Therefore, my idea is to stick self-adhesive on the door.

In fact, I did the same. However, after testing, the door is attached to the door. Because the door is made of iron, it will affect the wireless transmission, which will shorten the transmission distance from about 12 meters to 5-6 meters, reducing the transmission distance by half. But it is still enough for ordinary families.

At the same time, it should be noted that when installing, at least 3.5cm of the door edge distance should be reserved for those affixed to one side of the door, otherwise the transmitter will be easily crushed when opening the door!

The following is a schematic diagram

After being glued to the door with 3M double-sided adhesive, the transmitter can withstand a weight of more than 2.5KG after 12 hours of testing. (According to the performance, the tension that can be borne can be greater)

Generally speaking, for most families, the installation problem of doorbell can be solved with double-sided adhesive tape. An additional pair of expansion yarn can meet the needs of families with higher requirements. It is recommended to be listed as an optional accessory.

Now the wireless charging technology has become increasingly mature, and the doorbell is completely self powered, which has become operable. The following is a personal assumption for reference only.

PS: At the end of the article, I would like to thank Aigoji, Leifeng and LinkedIn Technology for this evaluation opportunity!

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