Ltpgtdx100hpts 100mm 4 inch extract fan with integral humidistat over run timer and pullcord auto onoff operation via the humidity sensor adjustable for 50 90 relative humidity pull cord over rides automatic function timer adjustable from 2 to 20 minutesltbr gtltbr gta comprehensive range of stylish compact and easy to install 100mm 4quot single speed extractor fans suitable for a wide range of applications including bathrooms shower rooms and toilets including zones