The PSSuniversal standard I/O modules can process digital or analogue signals. Up to 64 I/O modules can be installed in any order.

The standard output module PNOZ m ES 14DO with 14 semiconductor outputs for non-safety-related applications. Used in conjunction with the base unit PNOZ m B1 to expand the modular system. Maximum 1 output module possible on the right of the base unit PNOZ m B1.

The standard input module PNOZ mi2p provides eight inputs for modular expansion in conjunction with a base unit.

Configurable safety system PNOZmulti expansion module 8 digital inputs.