Fire-Lite I300, Fault Isolator ModuleCondition:* New Surplus Stock, Aged Packaging. As Pictured. Additional Notes:* Directly Powered by SLC Loop without the need for external power* LED that blinks to indicate normal conditions and turns solid when short circuit conditions are detected.* High Noise Immunity (EMF/RFI)* UL Listed: S2424 (I300 Only).* ULC Listed: S2424 (I300A Only).* CSFM: 7300-0075:0159.* MEA: 3-94-E. FM ApprovedHoneywell Fire-Lite I300