Ltpgtdx100pirs 4quot 100mm extractor fan with integral pir proximity sensor to activate the fan when movement is detected in the roomltbr 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 1 and 2ltbr gtltbr gtall dx100 extractor fans except the cp clamp packed model come complete with a universal m