The invention relates to high gas barrier packaging films exhibiting good shrinkage and containing an antifog composition for modified atmosphere packaging of foods and the like. A rectangular slab-shaped reservoir within the mirror frame communicates at the upper end thereof with a bore through the water supply conduit, which has at an outer end thereof a vertically disposed water fill aperture. Each combination when summed in a particular way results in the market under consideration. The actuator is external to the control circuit frame and has a second terminal coupleable to the first terminal. The data plugs are respectively connected to an inductance coil of the first relay, and an inductance coil of the second relay. The feedback path causes some delay in any output voltage transition, which further enhances the hysteresis effect and improves noise immunity.