Senba - Model S9001 -Plastic Fresnel Lens for Smart Home System

Fresnel Lens are widely used in human motion switch, intrusion alarm system, infrared thermal sensor. There are different angle, detect distance, size for you choose.  S9001 is the most popular item in the market. The fresnel lens is a optical element, one side is smooth, another side is by a ring a part of concentric garden composition. Fresnel lens arrays designed for Passive Infrared Sensor. The optical surface increases lens sensitivity for PIR sensor application. All the PIR sensor must work with the Fresnel Lens. Fresnel lens is more competitive than the traditional optical lens.