מטריקס להדהד שחיקה adafruit ir led ניצן לא ניתן להעלות על הדעת בן אנוש
Adafruit High Power Infrared LED Emitter - STEMMA JST PH 2mm : ID 5639 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
387 - Adafruit - Infrared LED, 940nm, 5mm
Overview | Using an Infrared Library on Arduino | Adafruit Learning System
Super-bright 5mm IR LED [940nm] : ID 387 : $0.75 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com : Acxico 1Pcs 48 Pieces IR LEDs Light Board 940NM LED Illuminator IR Infrared Board Module Invisible Light at Night for CCTV Security Camera : Electronics