Reference of PIR module, PCB design and mounting lens

How are you? We are Fresnel Factory.

With the expansion of Smart Home market, it is the increasing trend of inquiries about PIR Module.

There are many inquiries not only about PIR lens and sensor but also about PCB design and housing, which indicates there are many companies undergoing difficulties  from them.

So we checked how other companies handled  as the reference  for the matter.