Excelitas Quad Element PIR Sensor PYQ1348 / 3591

Description

Brand New PYQ1348 / 3591 Sensors in a TO-5 housing.  These are the 0.8x0.8mm elements.  I bought them from Allied Electronics for a project and ended up not needing them.  They have been stored in the original packaging in a climate controlled environment.
Allied has them priced at .30 each with a 50 piece minimum so this is a good deal.
https://www.alliedelec.com/product/excelitas-technologies-sensors/pyq-1348-3591/70818507/