The contact expansion module PNOZ s20 has two safe semiconductor outputs and an auxiliary output. In conjunction with a base unit, the number of semiconductor outputs can be expanded: If max. ten semiconductor outputs are needed, the contact expansion module PNOZ s20 can be connected directly to a base unit.
If more safe semiconductor outputs are needed, the contact expansion module PNOZ s7.1 can be integrated in between. The number of semiconductor outputs can thus be increased almost infinitely.