Retroreflective sensor RL28-55-V-Z/47/82b/112 RL28-55-V-Z/47/82b/112 Foreground suppression, appropriate for detecting sheet-wrapped items Ultra-bright LEDs for power-on, weak signal indication and switch state Programmable time function GAN, GAB, IAB and GAN-IAB as dual function Not sensitive to ambient light, even with switched energy-saving lamps Waterproof, protection grade IP67