Series DDP Switches provide dual switching action: two separately-operated, independently-adjustable SPDT snap-acting switches are mounted on a common foot bracket.

Differential pressures up to 2"wc  or 12"wc can be measured.

Because the two snap switches are set independently, an adjustable "dead band" can be established for control circuits requiring both high and low actuation points.

Many control and alarm functions are possible: for instance, monitor two pressure sources and sense the differential for actuation at two independent set points.