Siding, stucco, and brick are some of the toughest exterior walls for signal to travel through. While the Chime Pro should help improve your signal strength, this may not be fully accessible due to the siding. I recommend avoiding any further interferences on the inside of that side exterior wall. Any mirrors, appliances, or large furniture will only dampen the signal further. Also, If possible, try mounting the Cam in a different location where the signal is stronger. Hope this helps! 