Signal Isolator with A/M Switch Compatible with Manufacturer Part Number 13E632 13E633 13E634 13E635 13E636 13E637 13E638 13E639 13E640 13E641 13E642 13E643 For Use With Grainger Item Number 13E632 13E633 13E634 13E635 13E636 13E637 13E638 13E639 13E640 13E641 13E642 13E643 For Use With Dayton Models 13E632 13E633 13E634 13E635 13E636 13E637 13E638 13E639 13E640 13E641 13E642 13E643 Mounting Type Internal Includes A/M Switch