keyence cz-v21AP rgb fiberoptik sensör tavsiye ederim ama biraz pahalı 4 kanal çıkışı var http://www.ipdgroup.com.au/WMS/Upload/Resources/Brochures%20&%20resources/Industrial%20Automation/Sensors/Resources/Fibreoptic/Instructions/cz_v20_man.pdf
işini rahatlıkla görür