The LHi 333 pyroelectric infrared-detector series is specially designed for Light switching applications with many detectors working in parallel for a wide field of view. It includes a dual element pyroelectric ceramic element with FET in source follower connection.
This detector is fit with an infrared filter 5...14 µm. It offers high responsivity with excellent common mode performance (match) and low noise.

Dual Element Detector
Special Flat Pack Housing
Designed for Multi-Sensor Arrangements