For din rail mounting low switching noise no power consumption in standby control with 8 230 vuc additional control inputs for central on and central off with 8 230 vuc galvanically separated glow lamp current max 50 ma starting from 100 v control voltage possible only in case of certain functions switching power max 20 a230 v via both the contacts the following functions can be selected by means of a rotary knob central on and off only central on only central off no ce