The Banner PSG-4M-403-USB is a compact and configurable safety controller designed for monitoring emergency stop buttons, safety light curtains, two-hand controls, and other safety devices. With 4 safety-rated inputs and 3 safety-rated outputs, it offers flexibility in implementing safety functions in machinery. Programming and diagnostics are performed via USB connection using Banner’s PSG software, making setup fast and intuitive. The unit mounts easily on DIN rails for clean panel integration. Key Features: 4 safety inputs and 3 safety outputs USB port for programming and diagnostics Configurable logic with PSG software DIN rail mountable compact housing Compliant with SIL CL3, PL e, and Category 4 Ideal for small to medium machine safety zones Applications: Emergency stop circuits Safety light curtain and interlock monitoring Two-hand control safety systems Packaging, assembly, and robotic workcells