The UK's first app controlled unitary fan with set up commissioning and adjustment all controlled with bluetooth via an app. One model fits all applications and can be used in bathrooms utility rooms WC's and kitchens. The sensitivity of the light and humidity sensors can be adjusted with a simple action to a level of fine precision giving the user total control and flexibilty. Silent hours can be set to ensure the fan does not boost in the night to avoid any disturbance to the user. It is also easy to clean as the central module disconnects allowing the fan to be wiped clean and the dust build up in the ducting to be removed. (Part no 409802).