For SHE and ventilation Special features: Mechanically adjustable tight shut-off Technical data Version FM/2/...-300N/.../RWA Electrical properties Rated voltage 24 V DC (-20 %/+25 %) Permissible ripple voltage 2 Vss Nominal current 1 A Cut-off integrated limit switch Class of protection III Mechanical properties Stroke length aprox. 301 and 401 mm Pressure force 450 N...