Retroreflective sensor RL28-54-G/49/105 RL28-54-G/49/105 Detects transparent objects like clear glass, PET, and transparent films TEACH-IN switch for contrast detection levels setting Automatic adjustment in case of soiling in contrast detection mode Ultra bright LEDs for power on, weak signal indication, and switching state Flashing power on LED in case of short circuit Not sensitive to ambient light, even with energy-saving lamps Waterproof, protection degree IP67 Protection class II