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Banner MINI-BEAM: Aperture; Vertical Slotted; 0.5 x 12.7 mm (0.02 x 0.5 in); For Opposed Mode MINI-BEAM Sensors - QTY 20 (AP31-020V)
https://www.branom.com/shop/27134-banner-mini-beam-aperture-vertical-slotted-0-5-x-12-7-mm-0-02-x-0-5-in-for-opposed-mode-mini-beam-sensors-qty-20-ap31-020v-18146
https://www.branom.com/web/image/product.template/18146/image_1920?unique=0b1a179
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