The Allen-Bradley 1756-L7SP is a GuardLogix safety partner controller designed to operate alongside primary GuardLogix controllers such as the 1756-L71S, 1756-L72S, and 1756-L73S. Together, these controllers form a 1oo2 (one out of two) safety architecture, supporting applications rated up to Safety Integrity Level 3 (SIL 3) and Performance Level e (PL e). The 1756-L7SP is installed in the slot directly adjacent to the primary controller and features a user memory that mirrors the capacity of its paired unit. It also includes standard communication ports and a keyswitch for secure operation. This controller occupies a double slot width in the chassis, ensuring dedicated space for redundant safety processing.