https://www.readygates.co.uk/fa31-180deg-photocell-slimline-bi-directional-photobeam.html
FA31 - 180deg Photocell Slimline Bi-Directional Photobeam
Model FA31 Power 12/24V AC/DC Range 12m Dimensions 37 x 36 x 108mm
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https://www.mireiace.net/activitats/nadal-a-mireia-marina/89d0ba13-fa31-450d-942c-78831e6300b8/
89d0ba13-fa31-450d-942c-78831e6300b8 - Mireia Centre d'EstudisMireia Centre d'Estudis
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