How many First Alert smoke detectors can you control with a Ring Alarm Pro

I recently purchased a Ring Alarm Pro with the eero WiFi 6 router. I purchased two First Alert Z-wave/Ring compatible smoke/CO detectors. I was able to link them to the Alarm Pro base station with no problems. I need to replace the rest of the smoke detectors in my house. How many smoke detectors will the Ring Alarm Pro support? I don’t want to use listeners.
Thanks.

Hi @user21585. The Ring Alarm system can support up to 99 additional devices. You should have no problem adding additional Smoke and CO alarms to your system. I hope this helps!