The Humidcon-s can regulate the humidity in an area by activating a spray system and ventilators. The 'on' and cycle time of the valves in the spray system can be set accurately using the programmable timer. If no humidity sensor is connected, the ventilators contain to run and the valves in the spray system are activated continuously, in accordance with the preset 'on' and cycle time. If a humidity sensor has been fitted, the relative humidity can be read off and set. When the reading is too low, the Humidcon-s regulates the relative humidity by activating the spray valves in cycles, in accordance with the preset value. If the humidity climbs above the set value, the spray valves are disactivated and the ventilator continues to run for one hour.