A
The only requirement is that Ayrstone products must ALWAYS be mounted pointing STRAIGHT UP when used outdoors so any moisture can drain out through the bottom.
Ayrstone products are rated for -20 to 70 degrees Centigrade, or -4 to 158 degrees Fahrenheit, but they have proven to work well in temperatures significantly colder than that.
The graphics below show the distribution of Ayrstone customers across the United States and Canada. As you can see, AyrMesh equipment is being successfully deployed in the coldest and warmest areas of North America.