The PNOZsigma contact expansion module you're describing is used in safety applications where multiple outputs are required, including standard and safety-related outputs. It operates on a 24 V DC supply

The PNOZsigma contact expansion module you described offers 8 N/O and 1 N/C contacts, operates on 24 V DC, has a width of 45 mm, uses plug-in spring-loaded terminals, and

The module has 4 normally open (N/O) contacts and 1 normally closed (N/C) contact. This means it can switch circuits where 4 contacts close when activated (N/O) and 1 contact

The PNOZsigma safety relay is designed for use in industrial applications where safety is critical. It ensures compliance with safety standards (such as EN ISO 13849) by providing reliable control