Senba S9006 HDPE PIR Sensor Motion Detector Lens - 10.5mm Focal Length, 10m Range, 100° Viewing Angle

The S9006 is a Fresnel lens made from HDPE, designed specifically for Passive Infrared (PIR) motion sensors. It focuses ambient infrared radiation onto the pyroelectric sensor element, dramatically increasing the device's sensitivity, detection range, and field of view. It is an essential optical component for building or upgrading any PIR-based motion detector.

The lens has a focal length of 10.5mm, which determines the optimal distance between the lens and the PIR sensor chip. It provides a detection distance of up to 10 meters and a horizontal viewing angle of 100 degrees. These parameters define the coverage area and sensing zone of the final motion detector assembly.

Installation is straightforward. The lens should be mounted directly in front of the PIR sensor's pyroelectric element, typically in a housing or enclosure. The smooth side usually faces outward, while the structured Fresnel side faces the sensor. Ensure the 10.5mm focal length is maintained for optimal performance, and secure the lens to prevent misalignment.

While designed as a universal accessory, compatibility depends on the sensor's housing and the required focal distance. It is physically compatible with many standard PIR sensor footprints (like the common 23mm x 23mm modules). You must verify your specific sensor's datasheet to confirm the recommended focal length matches this lens's 10.5mm specification.