This aid facilitates the removal of moisture from the Helium and Oxygen sensors. A fan is placed on the O₂ sensor block (with the head positioned upside down) and connected to a charger via a USB cable. A gentle stream of filtered air quickly and effectively removes condensed moisture from the sensors' hydrophobic membranes. Part of the airflow is also directed inside the sensor head, which tends to become dewy after a dive.

The fan also features a dust filter, preventing any particles from getting into your sensors.