The present invention relates to an anti-allergic pharmaceutical composition containing at least two active agents chosen from: one allergen, one antihistamine compound, and one inhibitor of histamine synthesis, said active agents being associated in said composition with a pharmaceutically acceptable vehicle. A method for operating the dryer and a method for controlling the temperature andor the humidity of the air of a room using the dryer are also provided. a person moving along a path associated with a region of the space associated with the group, and in an operational mode to illuminate the luminaires of the group in response to the sensor system detecting occupancy in the region associated with the group. Due to the small volume of the chamber, an incremental change in the plunger position before the delivery stroke produces a significant change in the delivery pressure.