The Helios EVK 200 is designed to cover supply and extract air openings efficiently. It features a frame, blades, and actuators made from light grey plastic, with the actuator housing rated IP55 for reliable outdoor installation. The number of louvres varies by size to suit different ventilation requirements. Automatic control is integrated, with a localized changeover switch that activates the servomotor, which in turn switches the fan circuit via a limit switch. The unit comes with a fully wired signal box and a 1.5 m connection cable for easy installation. Operating at 230 V, 50/60 Hz, the EVK 200 supports a maximum supply air flow velocity of 6 m/s and a maximum exhaust air flow rate of 8 m/s, ensuring effective ventilation performance.