7 Are low pressure switches normally open or closed?
What is a Pressure Switch?
Normally Open (NO) Contact. The NO contact is open when the pressure is below the set point and is closed when the pressure exceeds the set point. For example, a switch with a set point of 10 psi will be open when the pressure is below 10 psi (shown top left) and close when the pressure is above 10 psi (see above)
