Fire-Lite ELR-47K 47K ohm end-of-line resistor

What End-of-Line (EOL) Resistor Does My Fire Alarm Panel Need?

EOL ResistorsThe Fire Alarm Supplier
Fire-Lite ES-50X 50-point addressable fire alarm control panel

Fire-Lite ES-50X vs ES-200X: What They Replace and Which Devices Fit

CompatibilityThe Fire Alarm Supplier
Notifier FMM-1 addressable monitor module

Monitor Module vs Relay Module vs Control Module: Which Do I Need?

Buying GuideThe Fire Alarm Supplier
System Sensor D4120 4-wire duct smoke detector

Which Duct Smoke Detector Do I Need: DNR, D4120 or D365PL?

Buying GuideThe Fire Alarm Supplier