SICK Inc. manufactures type 2 and type 4 safety light curtains for finger, hand, and access protection. The light curtains feature resolutions of 14mm, 20mm, 24mm, 30mm, and 40mm - with scanning range of 0 to 19m. Light curtains are available with fixed/floating blanking, restart interlock, PSDI function, external device monitoring, operating mode selection, and bypass function.