Like many other users, I have a contact sensor inside my mailbox to alert me when the box is opened. It’s a metal mailbox about 60 feet from my sensor bridge (also located on my outdoor camera.) My typical signal strength is a single bar and the sensor’s operation has been reliable.
I was wondering how seriously cold winter temperatures below say 30 degrees Fahrenheit will adversely affect the sensor’s battery performance and reliability in these conditions. I assume it will suffer.