1. First of all, the first point of performance is that when we buy a video doorbell, we should be optimistic about the effect of image performance, the change of clarity and pixel value, as well as the overall picture quality effect, whether the night vision function is available, etc.
2. Secondly, if you can't intercom, it's still unsafe, and now the way of intercom is full-duplex intercom, half-duplex, and simplex. To identify the voice system of the video doorbell, such as sound quality and volume, etc., relevant tests should be carried out.
3. In general, the appearance of the video doorbell should be selected according to the decoration style, and the overall color and contrasting color, the same color and so on should be improved in an all-round way, and the most appropriate decoration style expression should be selected according to their own preferences.
4. See whether the material of the video doorbell is wear-resistant, environmentally friendly, shop around, and select high-quality and low-cost products. The system structure should be as simple as possible, especially for relatively large systems, and try to choose the product series that the manufacturer has launched for a long time, stable and mature quality, and the function does not have to be too complicated.
