System Sensor COSMOD4W i4 Series, 4-Wire Interface Module (Required to use with COSMO-4W Models)

Streamline fire alarm integration and enhance occupant warning with the System Sensor COSMOD4W 4-Wire Interface Module. Engineered for installers and integrators, this interface module lets you connect up to 12 COSMO-4W i4 or compatible i3 (4WTA-B) combination detectors while consuming only 2–3 control panel zones (smoke, CO, optional trouble). That means less wiring, fewer panel inputs, and lower installation costs for residential or light-commercial security and monitoring applications.

The COSMOD4W supports distinct smoke and CO signaling to the control panel and can interconnect the audible circuits so all connected detectors sound together for unified alerts. Built-in LED status indicators simplify on-site troubleshooting by showing normal operation, loop faults, smoke and CO events, and maintenance states. The module mounts to a 4 11/16-inch square back box and uses SEMS-screw terminals for secure, reliable wiring. Ideal for fire alarm integration, surveillance-ready sites, and life-safety upgrades—order the System Sensor 4-Wire Interface Module to reduce complexity and improve system responsiveness.

• Integrates up to 12 COSMO/i4 or compatible i3 detectors while using only 2–3 control panel zones, reducing wiring complexity and panel inputs
• Triggers all connected detector sounders for full-area audible alerting, delivering faster, consistent occupant warning for smoke and CO events
• LED status indicators provide instant loop, alarm, trouble, and maintenance visibility for quicker diagnostics and service
• Simple installation to a 4 11/16-inch square back box with SEMS-screw terminal blocks for reliable, time-saving wiring
• Supports distinct smoke and CO signaling to the fire panel and offers optional trigger inputs for expanded system control
• Designed for fire alarm integration with wired connectivity to enhance security, monitoring, and life-safety system interoperability