Hello, I tried to get the Ring CO/Alarm listener to listen to my First Alert SCO500B (I have 5 in the house all interconnected), but no luck. These models interconnect but are not Zwave and would require the listener. Unfortunately I tried 2 different locations and could not get the listener test to start. I checked and these each give off the T3 and T4 alarm codes, but there is also talking/announcements: “Warning, smoke detected in kitchen”. Is there a compatability issue with the SCO500B. I returned the Ring listener, but if they are compatible and I need to follow a slightly different procedure becasue of the annoucements, could you let me know.