Review on 🚀 Enhanced First Alert RM4 Intelligent Relay for Advanced Connectivity by Javarie Malick

This works well with my First Alert detectors (which look exactly like the BRK model). In my house there are 2 smoke detectors and 2 combined smoke and carbon monoxide detectors connected together. The relay is activated when a detector detects smoke or carbon monoxide, so it does not distinguish between the two types of alarm. I just connected the ground and breaker wires to the door/window sensor for my alarm system and now I can get alerts when smoke or carbon monoxide is detected.