A filter bypass valve is disposed in parallel with an aircraft cabin air filtration system air filter. The computation is derived from the position and posture of the lower jaw relative to the upper jaw detected by the position sensor. A detection unit at the housing is constructed and arranged to detect an environmental property of the interior environment of the gas chamber, and to generate a detection signal in response. For this, the assembly device includes a first lower shell including an accommodation for the first of the two circuit substrates, an arrangement for the defined alignment of the first circuit substrate in the accommodation, and a second, upper shell including an arrangement for adjusting the second circuit substrate positioned on the semiconductor element. The new variety possesses a unique red foliage, and is a semi-dwarf, with height about 24-30 inches.