Monitoring installation now monitoring is more common. The general definition is divided into 420, 480, 540, 600 and 650 lines. The better the effect you want, the higher the number of lines to be selected. Of course, the higher the price.

1. Economy

At present, the homogeneity of security products is very serious, and the imported surveillance cameras are almost the same as those made in China, so friends should not blindly worship foreign brands;

2. Stability

We must believe that the best after-sales service is that there is no after-sales service, but there is no after-sales service. People have minor diseases and disasters, and problems with any product are inevitable;

3. Scientific nature

Monitoring system is actually something more important than equipment in design scheme. The same monitoring camera will achieve different effects in the hands of different engineers, which is by no means alarmist;

4. The price should be moderate
Some people want to buy very low-cost products and try hard to keep down the price. In the end, the seller basically has no profit. How can they provide you with high-quality service?