Safety Instructions Be sure to read “Handling Precautions for SMC Products” (M-E03-3) before using. . Deleted the system “C” and “E” from How to Order on page 1, 14, 28, 34. . Deleted the 51-SYE100-C from Zener Diode Barrier Dimensions on page 41. . Deleted the 51-SYE100-E from Insulating Barrier Dimensions on page 42. NQ Record of changes Edition B