Pilz's PNOZ s5 Safety Relay Module (750135) is a three-input, four-output, IP40-rated relay modue. It is a three-phase, 24V DC safety relay for use with safety functions in accordance with EN 60204-1, EN ISO 13849-1, EN 61508 (SIL 1 to SIL 3). It has the capabilities to monitor N/O, N/C, monitored N/O contacts, as well as 3- step and 4- step safety devices. It can be used in applications such as emergency stop, movable machine guards, two-hand operation, and light curtains. Additionally, it has an LED indication for each circuit, enabling users to quickly and easily detect faults.