How does Black Cat One judge the quality of the light curtain?

Black cat One's method of judging the quality of light curtain;

1. If the input power supply is normal, all the connecting wires are fine. Block the light curtain with something, and replace the light curtain output relay and indicator light accordingly, otherwise there will be problems with the light curtain.

2. Black Cat 1 is a high-end community smart door brand developed by Shenzhen Wan Rui Intelligent Technology Co., Ltd. ... Wan Rui Technology is a leading intelligent property and intelligent life system integrator in China. Founded in early 1994, the company is a wholly-owned subsidiary of Vanke. As the first robot black cat 1 launched by Vanke Property, through intelligent face recognition, the system can recognize the owner's face and record it, instead of automatically calling the police when non-community personnel approach the black cat 1 ... effectively preventing outsiders from entering the community and ensuring the safety of community access.