1. As a video surveillance product, image quality is always the first, including image clarity, color,5mp camera  real-time, low illumination, wide dynamic function, etc.;

2. Product stability, including the stability of hardware and software; rich in functions, mainly supporting infrared including IR-CUT, two-way voice, alarm input and output, support for RS485, automatic aperture, SD storage, WIFI, etc.;

3. Maturity of client software, continuity of subsequent development, software modification support; compatibility, peripheral product support, and back-end storage support;

4. It is also very important to connect with mainstream platforms. It is necessary to connect with mainstream NVR and large-scale platform software at home and abroad, as well as the two major protocols of ONVIF and PSIA.