The PILZ PZE X4VP 787580 is a contact expansion module designed to increase the number of available safety contacts in a safety circuit. It is used in conjunction with a base safety relay (e.g., from the PNOZ X series) to provide additional safe outputs for applications such as emergency stops, safety gates, and light curtains. This module features four normally open (N/O) safety contacts and one normally closed (N/C) auxiliary contact, operating on a 24V DC supply. Its compact, 22.5 mm wide housing and screw terminals allow for easy and space-saving installation in control cabinets, ensuring reliable expansion of safety functions in industrial automation.