Motion Detect Module Plastic Fresnel Lens S9003 for Automatic Light

1. Fresnel lens can focus the PIR point. PIR detect rang will be more distance and large.

2. Protect PIR sensor. Most of the alarm system and lighting are outdoor, so that we need the fresnel lens to protect the PIR sensor .

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. There are transparent type, white color and black color for your choose.