Powerful 27 l/s Airflow – Delivers 97m³ per hour of extract capacity, effectively removing moisture, odours and stale air in compliance with Building Regulations Approved Document F Automatic Humidity Sensing – Continuously monitors bathroom moisture levels and activates automatically when humidity rises, with a sensitivity range adjustable between 60 and 90% RH to suit your bathroom environment and personal preference Overrun Timer – Once humidity drops back to the set level the fan continues to run until the air is fully cleared, combining humidity sensing with timer overrun for the most effective moisture control of any automatic fan Quiet 25dB Operation – Runs at just 25dB(A) at 3 metres, one of the quietest fans in its class, ensuring no disruptive noise in bedrooms, en-suites or during late-night bathroom visits IP45 Rated, 7.5W Low Energy – Fully rated for Zone 1 and Zone 2 bathroom installation with a high ingress protection rating, while drawing just 7.5W to keep running costs to a minimum — backed by a 2 year manufacturer's warranty, Weight: 1.1904962148 pounds, Manufacturer: Airflow