The TE Connectivity 9-1415054-1 is a Safety Relay SR4D4009 manufactured by TE Connectivity. It is a single-channel, solid-state, passive non-energized, momentary contact switching device, with both Normally Open and Normally Closed contacts, that meets IEC 60947-5-1 safety requirements. It is designed to meet the needs of applications where a high level of safety is required, such as medical and industrial equipment. It is rated for up to 250VAC and 2Amps, and features a UL 508, 1600V rated isolation between input and output circuits. The LED indicators are Red for Normally Open contacts, which can be seen in two off positions when the switch is closed, and Green for Normally Closed contacts. It is CE certified, and RoHS compliant.