The Durridge DRYSTIK ADS-2 active moisture exchanger has been updated with high quality pumps, available in brushed and brushless varieties. With the improved pump the DRYSTIK ADS-2 will perform flawlessly for years to come. Existing DRYSTIKs may be returned to us and we will upgrade them to new pumps with a quick turnaround time. The DRYSTIK ADS-2 removes moisture from air entering the RAD7, greatly extending desiccant life. Learn more at the DRYSTIK ADS-2 page.