The motors in this series are suitable for 40's, 50's,
60's as well as 70's round or octagonal shafts. This is possible due to the
motors being available with a diameter of 35 mm and 45 mm. The ERF series has a
built-in receiver and can be operated by heicko emitters. The tubular motor is maintenance-free with a long life
span and is equipped with a thermal overload protection system. The ease of
mechanical limit setting combined with the silent running of the motor makes
this model universally applicable.