For further insight on proper voltage in any specific environment, we recommend contacting our support team. The flow of voltage is dependent on many things, including but not limited to, length of wire run, gauge of wires, existing chime kits, transformer output rating, resistance, and even in app settings. Our team will be able to investigate your power supply more indepth as well as the environment and other things that will help to not only answer your questions, but ensure you do not run into any unforeseen power issues in the future. Let us know how it goes!