Ring Pro (wired) not ringing inside - intermittent

Hi @ISNUMERIC. If it is related to router placement, then your device health should be reporting poor signal strength, also known as RSSI. If it is poor, then a wifi extender like the Ring Chime Pro could help your Doorbell’s performance. Also, if your Device Health is showing that you should upgrade your transformer, I would go through replacing it, as that could resolve your concern. If you are not comfortable replacing your transformer, I strongly recommend consulting a qualified electrician for assistance.