Laser through Beam Switch 30Meters range Laser through Beam Switch 30Meters range [RKI-1194] - ₹950.00 : Robokits India, Easy to use, Versatile Robotics & DIY kits
M18 laser beam photoelectric switch E3F-20DY1 90v-250V AC infrared visible light sensor Internal Power Cables - Newegg.ca