AC Dual Function Series Switch SetThese products are all Made to Order Which means they are non cancelable and non refundable Description Dual Function Switch, 1 A + 1C Form Reed The AA and AC switches can be used in numerous security applications where you need to isolate input from two different pieces of equipment that require a signal from the same source. The Combo Series switches are dual function reed contacts that monitor two separate functions. By combining two reeds in one