The Helios ELS EC 100/35 F fan insert features electronic humidity control with two airflow rates of 100 and 35 m³/h, designed for efficient and adaptive ventilation. It offers adjustable switch-on delays of 0 or 45 seconds and selectable run-on times of 6, 10, 15, or 21 minutes to suit varying ventilation demands. The spiral casing and aerodynamically optimized radial impeller ensure high pressure performance with low noise, enhanced by ultraSilence technology. Installation is quick and tool-free, with automatic electrical contact closure during plug-in. The energy-efficient EC motor provides quiet, economical operation. This model includes a flat, award-winning alpine white plastic façade and comes standard with a permanent filter and an optical cleaning indicator for convenient maintenance.