Secutron MRI-4070 Multi Isolator Module for SLC Loop

Maintain SLC loop integrity and reduce downtime with the Secutron MRI-4070 Multi Isolator Module for SLC Loop. Designed for fire alarm control panels, this control panel module isolates short-circuited sections so the remainder of the loop continues to operate—preserving monitoring, security, and surveillance connectivity across your system. The hardware-only module requires no addressing and includes a bi-state LED that blinks in normal operation and latches steady at the devices adjacent to a short for quick fault localization. With support for up to 240 MRI-4000-series devices on a single SLC (within loop current limits) and compatibility with standard 4" square or double-gang back boxes, the MRI-4070 simplifies large-scale deployments and retrofit projects. Its self-restoring behavior automatically returns the entire communication loop to normal when the short is removed, reducing truck rolls and downtime. Ideal for commercial, institutional, and multi-site security installations, the Secutron MRI-4070 delivers reliable short-circuit isolation and faster troubleshooting for fire alarm and monitoring systems. Order the MRI-4070 to improve uptime and streamline maintenance on your next control panel project.

• Keeps SLC communication running during a short circuit to minimize system downtime and false alarms
• Automatic self-restoring isolation that returns the loop to normal once the fault is cleared, reducing maintenance trips
• Local LED indication that identifies the faulty SLC section for fast troubleshooting and serviceability
• Hardware-only design requires no device address or programming, saving installation time and configuration errors
• Supports large installations (up to 240 MRI-4000-series devices per SLC) and mounts in standard 4" square or double-gang back box