System and method for indicating air pressure within an enclosed space

A pressure sensing and indicating method for an enclosed space, the method comprising:

• sensing pressure with a pressure sensing device and pressure indicator within the enclosed space and reading out the pressure via a speaker;
• flexing an elastomeric membrane held at an opening of a housing toward an inward direction for a positive pressure state of the enclosed space and toward an outward direction for a negative pressure state of the enclosed space;
• illuminating the elastomeric membrane by a first color for the positive pressure state and by a second color for the negative pressure state;
• projecting, on the elastomeric membrane, a positive pressure symbol for the positive pressure state and a negative pressure symbol for the negative pressure state within the enclosed space.

A system for sensing and indicating air pressure within an enclosed space, the system comprising:

• a housing having an opening;
• an elastomeric membrane covering the opening of the housing and capable of flexing inwards and outwards during a pressure change of the enclosed space;
• a light source disposed within the housing to provide an illumination indicating a positive pressure with a first color and indicating a negative pressure with a second color;
• a projector housed within the housing for projecting a positive pressure symbol and a negative pressure symbol;
• wherein the elastomeric membrane flexes inwards along with a representation of the positive pressure symbol with the illumination of the first color when the pressure within the enclosed space is positive and the elastomeric membrane flexes outwards along with a representation of the negative pressure symbol with the illumination of the second color when the pressure within the enclosed space is negative.