Cleveland Controls DDP-109-210 Sensing Switch R-134A maintaining system static pressure and

maintaining system static pressure and preventing thermal overload trips

the unit supports line voltage ranges from 120V to 277VAC and features dual 1/4" barbed connections for simplified field installation on positive pressure or vacuum sides of the blower housing

an "open" reading typically indicates a fractured element requiring replacement

outlet range for medium-pressure requirements

This module is essential for resolving HVAC blower motor failure symptoms such as erratic fan speeds

Cleveland Controls DDP-109-210 Sensing Switch R-134A maintaining system static pressure andThe Cleveland Controls DDP 109 210 is a heavy duty dual setpoint differential air pressure switch designed for critical proving and alarm functions in HVAC and energy management systems. This unit features two independently adjustable SPDT snap acting switches mounted on a single foot bracket, allowing for a precise adjustable deadband or the monitoring of two distinct pressure sources. The silicone diaphragm and rugged metallic housing ensure