Bosch FLM-I 420-S LSN Short Circuit Isolator Module, Surface-Mounted Box

FLM-I 420-S is an isolator module that automatically removes the short-circuited section from the LSN loop. Its two internal isolators disconnect the faulty section from both ends, allowing detectors and modules on the rest of the line to continue communication. Address assignment is automatic or manual via rotary switches; power is derived from the data bus. Its three empty screw terminals allow line connections at the junction point without requiring a separate distribution box.