150mm Bathroom Fan with Humidity Sensor, Adjustable Timer and Check Valve A practical ventilation solution for bathrooms and living areas that activates automatically when humidity rises and continues running for a set period after use. Designed for easy integration with standard 150mm ducting, the unit includes a builtin humidity sensor, adjustable timer runon, and an integrated check valve to prevent backflow. Key benefits and why you need it Automatic humidity control: The integrated humidity sensor switches the fan on when moisture levels rise, helping to remove excess moisture quickly and reduce condensation on surfaces. Timed runon for thorough ventilation: The adjustable timer keeps the fan running after the room is vacated to clear remaining damp air and odors. Backdraft prevention: The builtin check valve stops outside air and drafts from entering when the fan is off. Simple compatibility and installation: Sized for 150mm ductwork for a straightforward replacement or installation in ceiling or wall mount locations. Reliable everyday performance: Designed for continuous household use in bathrooms, en suites, cloakrooms, and other living areas that need controlled ventilation. Features and attributes Function: Humiditytriggered automatic operation plus manual or timed runon to maintain air exchange after use. Compatibility: Fits standard 150mm ventilation ducts and common mounting arrangements for domestic bathrooms and living spaces. Size: 150mm duct diameter specification for compatibility with existing duct systems. Performance: Rapid activation based on humidity levels with adjustable timer settings for runon duration. Maintenance: Accessible design for routine cleaning and simple filter or grille removal where applicable. Installation: Connects to household electrical supply; installation by a qualified electrician or competent installer is recommended. Practical use scenarios Family bathroom: Automatically ventilates during and after showers to clear steam and reduce condensation on mirrors and tiles. Windowless ensuite or cloakroom: Provides reliable air exchange where natural ventilation is limited or absent. Living area or utility room: Removes lingering cooking or laundry odors and helps maintain air movement in rooms without adequate natural airflow. What is included and notes Integrated humidity sensor, adjustable timer runon, and check valve built into a 150mm duct fan unit. Designed for domestic ventilation applications; check local wiring regulations and use a qualified installer for electrical connections.