Stable and reliable pressure sense technology. Building codes essentially state that egress through access-controlled doors must not require prior knowledge of operational requirements. Meeting this criteria, SDC’s patented SureExit PSB560 series pressure sense bars are designed to release electromagnetic door locks for uninhibited egress. When slight pressure is applied to the non-latching bar, either of the two redundant solid state pressure sensors are actuated causing the electronics to immediately release the electromagnetic door locks.