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Banner MINI-BEAM: Aperture; Circular; 2.5 mm (0.1 in); For Opposed Mode MINI-BEAM Sensors - QTY 20 (AP31-100)
https://www.branom.com/shop/27129-banner-mini-beam-aperture-circular-2-5-mm-0-1-in-for-opposed-mode-mini-beam-sensors-qty-20-ap31-100-18141
https://www.branom.com/web/image/product.template/18141/image_1920?unique=0b1a179
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