DDP SeriesAir Pressure Sensing SwitchesThe Model DDP-111 is a general purpose proving switch designed for HVAC and Energy Management applications. the DDP-111 provides dual switching action: two separately-operated, independently- adjustable SPDT snap-acting switches...

DDP SeriesAir Pressure Sensing SwitchesThe Model DDP-109 is a general purpose proving switch designed for HvAC and Energy Management applications. the DDP-109 provides dual switching action: two separately-operated, independently-adjustable SPDT snap-acting switches...

DDP SeriesAir Pressure Sensing SwitchesThe Model DDP-106 is a general purpose proving switch designed for HVAC and Energy Management applications. the DDP-106 provides dual switching action: two separately-operated, independently-adjustable SPDT snap-acting switches...

DDP SeriesAir Pressure Sensing Switchesthe Model DDP-105 is a general purpose proving switch designed for HVAC and Energy Management applications. the DDP-105 provides dual switching action: two separately-operated, independently-adjustable SPDT snap-acting switches...