An optical switch having a sealing system connects to input fibers and output fibers, and includes a switching device, a top housing, a bottom housing, a gasket and four fiber clamps. The image forming apparatus includes an image control unit having a central processing unit and an image control unit for receiving image data. Heat sensors are attached at spaced positions from each other along the tubing in the direction of fluid flow to sense temperatures. A first actuator allows operating the crimp punch tool. In one embodiment, the Incentive Spirometer uses a capacitive sensing circuit for sensing movement of the float within the tube wall and for obtaining a measurement or reading of the patient’s performance with the Incentive Spirometer.