Exceptional Airflow & Ultra-Quiet Performance: The QuietAir QT100 HT offers outstanding airflow rates of 21/25 l/s (75/90 m³/h) with two speed settings, effectively extracting air through ducting up to 12 meters. Despite its powerful performance, it operates at an exceptionally low noise level of 25/30 dB(A) at 3 meters, ensuring a whisper-quiet operation. Its compact dimensions of 147 x 147 x 131 mm make it an ideal choice for maintaining a peaceful and relaxing bathroom environment Adjustable Humidity Sensor: Features an adjustable humidity control range of 60% to 90% RH, allowing for optimal moisture management. Ideal for preventing dampness and mold in bathrooms, en-suites, and toilets. Customizable Timer Controls: Equipped with an adjustable overrun timer with options of 6, 10, 15, or 21 minutes. The fan also includes a 2-minute delay start and an interval timer with auto-start intervals of 0, 8, 12, or 24 hours, promoting energy efficiency Energy Saving: Designed with a low specific fan power (SFP) of 0.24 w/l/s and dual power options (5/9 watts), this fan ensures maximum performance while keeping energy costs low. Current ratings of 0.04/0.06A highlight its energy efficiency. Durable German Engineering: Built with long-life ball bearings rated for approximately 40,000 hours of operation. Certified with QuietMark for its superior acoustic performance, this fan guarantees durability, reliability, and reduced need for replacements., Weight: 1.6093745126 Pounds, Manufacturer: Airflow