Vent Axia 454057 Silhouette 100HT Extractor Fan 100 mm / 4 Inch (Humidistat/Timer)

This model has a built in Humidistat condensation sensor which automatically runs the fan until the humidity level falls. Requires to be connected to a circuit that is permanently energised and not routinely switched on off. Can be operated in conjunction with the room light switch (if required). Needs a second switched live input if this function is required.