Safety Modules are specialized control components engineered to execute safety-critical functions and emergency shutdowns. The architecture incorporates redundant internal processors and self-diagnostic circuitry to achieve high SIL (Safety Integrity Level) ratings. Technical characteristics include pulse testing for cable faults, forced-guided relays, and rapid response times. Functionally, these modules monitor safety field devices like E-stops and light curtains, and interface with relays to safely isolate power during a fault. By working independently or alongside standard CPUs, they ensure that machinery enters a safe state in the event of a failure, protecting personnel and high-value equipment from catastrophic damage.