...hotomicrosensors with Modulated Light that are easily affected: EE-SPX301/401, EE-SPY30[]/40[], EE-SPZ301[]/401[], EE-SPY31[]/41[], EE-SPX303N/403N, EE-SPW311/411, EE-SPX74[]/84[], EE-SPX[][]...https://www.ia.omron.com/product/cautions/24/safety_precautions.html