It is an object of the present invention to provide a communication terminal that can suppress the deterioration of a gain of an antenna either in an opening state or in a closing state. The system includes a control device including a processor, a pump device, and a pressure sensor, and a test module removably coupled to the control device, and further including a pressure interface and a tubing assembly defining a first fluid conduit between a first fluid inlet and a first fluid outlet. Then, approximate the R,G,B threshold values of the borderline pixels by repeatedly averaging the current R,G,B values of the borderline pixels and the previous R,G,B threshold values until the difference is less than a predetermined value. The buffing head further includes a well surrounding the buffing element and containing a fluid. Specifically, organic cosolvents are used to control the viscosity of a substrate-containing component and to enhance the solubility of the substrate in an aqueous reaction formulation without causing substantial loss of perhydrolytic activity of the enzyme catalyst. The motor comprises a rotor rotatably connected to a rotor of the compressor.