Abstract: A package system for a data logger utilizing a base member which is capable of underlying the data logger. A first flap is movably connected to the base member and overlies the data logger. The first flap possesses an aperture for viewing certain signal generating items and switches and allows access to a vent on the data logger. A second flap is also movably connected to the base member and overlies the first flap. A second aperture is smaller than the first aperture, but still permits viewing of certain signal generating portions of the data logger. Means is also provided for mechanically and electrically accessing the data logger for the purpose of inputting and outputting data.