Airflow QT100HT Extractor Fan with Adjustable Humidity & Timer - 100mm/4 Duct - German Made, QuietMark Certified 25 dB, Energy Efficient 5/9W, 2-Speed Operation Upto 25 l/s (90 m³/h), 3-Year Warranty

Two-Speed Extraction: Airflow Bathroom Extractor Fan features a high-efficiency 100mm axial impeller with airflow rates of 75/90 m³/h (21/25 l/s) across two selectable speeds, providing tailored ventilation for bathrooms, en-suites, and toilets. Suitable for 100mm/4" ducting. Advanced Humidity, Timer Overrun & Delay Start Functions: Equipped with an adjustable humidity sensor (65%-90% RH) and an adjustable overrun timer with 6, 10, 15, and 21-minute settings. Includes a 2-minute delay start function to prevent unnecessary activation from short-term humidity spikes, ensuring smart and efficient operation. For 100mm/4" ducting. Energy Efficient: Consumes only 5/9 watts, delivering excellent efficiency with a low specific fan power (SFP) of 0.24 w/l/s. Compact dimensions (147 x 147 x 131 mm) allow for straightforward installation. QuietMark Award & Quiet Operation: QuietMark certified by the Noise Abatement Society (2014), the fan operates at an impressively low noise level of just 25 dB(A), maintaining a peaceful environment while ensuring effective ventilation. Durability & Safety: Built with long-life ball bearings rated for approximately 40,000 hours and IP45 protection against water and dust. Safe for use in wet zones when installed with an RCD and fully compliant with IEE wiring regulations and Building Regulations Approved Document F., Weight: 1.6314207388 Pounds, Manufacturer: Airflow