With the continuous development of 2.4G wireless transmission, the demand for digitization is more and more strong. Jiasong Electronic Technology Professional provides you with technical solutions. However, people's current understanding of digital video intercom is still not thorough enough, not enough to understand the product, which brings great troubles when purchasing products. This article puts forward the purchase suggestions of wireless digital video intercom through interviews and sorting out related materials. I hope readers and friends can refer to them when purchasing products.
At present, digital products on the market are complicated and complicated, and half-digital and fake digital products are flooded into them. Therefore, users must pay attention when purchasing products. Here, I have collected some suggestions about purchasing.
For the digital video intercom system, there are the following suggestions:
1. Imported brands are not necessarily better than domestic brands
The scale of residential quarters in China ranges from a few hundred to a large number of thousands, and it is dominated by residential buildings. This is unimaginable in Western countries with a relatively small population density. Therefore, the capacity of intercom systems in foreign countries is far less than that in China. . In fact, if only from the perspective of digital intercom technology and quality, some domestic brands have already reached or even surpassed imported brands, and in some respects have a greater advantage than imported brands. Therefore, do not fall into the misunderstanding that imported brands must be better than domestic brands.
2. Identify whether it is really a digital product
For now, digital video intercom is in a period of accelerated development both in the market and in technology, and it has increasingly become an important role in the digital home. It must have three major elements: video compression, voice processing, and network transmission. All audio and video signals must be digitally encoded and compressed for transmission through the network. Therefore, when buying a product, we have to see whether the product has an RJ45 interface and whether the intermediate networking equipment is universal. Generally speaking, these networked intermediate devices can be purchased directly from the market. If they can only be purchased from the intercom system supplier, then it is definitely not a real digital product. The real digital products are standard and universal.
3. Product process design
Since the intercom system has been integrated into our lives, we will use it every day. Therefore, the style of the product's technical appearance must be close to the home style. In order to leave a good first impression to customers, the intercom system products must also have a beautiful appearance. Generally strong manufacturers, for the same series of products will have a variety of color styles, structural design styles, the choice of materials are divided into high, medium and low grades, more importantly, the design concept, user-friendly operation design, will make users feel very caring.
4. Waterproof, anti-disassembly and anti-destruction
The door phone of the intercom system not only requires exquisite appearance, but also requires the selection of good materials. The door phone is facing the possibility of being destroyed at any time, so the material it chooses must have a certain impact resistance to prevent malicious destruction by thieves. In addition, in product design, there must be a good anti-disassembly design to prevent thieves and other criminals from easily stealing it. In the structural design of the product and the surface treatment of the material, the problem of waterproofing must be considered to avoid affecting the operation of the entire system.
5. System function and integration
In addition to the functions of video intercom and remote unlocking, digital wireless video intercom products can also realize remote video monitoring, transaction alarm, access control system, three-meter copy, information release, smart home control, Internet access and video on demand Even value-added services such as mobile phone linkage. Therefore, during product demonstrations, it is necessary to check whether these functions are available to meet the functional requirements of the residential area. To meet the existing scale of community development, the function of the system must be very powerful.
6. Performance indicators and field inspection
The main function of the digital intercom system is still intercom, therefore, the voice of the call must be investigated, and the performance indicators such as audio signal-to-noise ratio, distortion and frequency response can be viewed. At the same time, it is also necessary to examine the circuit board process and test the electrical indicators of the product, such as current, voltage, and power.