Retroreflective sensor RL28-55-LAS/76a/82b/105/110 RL28-55-LAS/76a/82b/105/110 Visible red light, pulsed LASER light Ultra-bright LEDs for power on, weak signal indication and switching status Strong push-pull output Test input Unaffected by ambient light, even works with energy-saving lamps Protection class II Waterproof, protection rating IP67