1. The The Turbine Boss™ needs no batteries or electricity.
That's hard to believe. How does it work?

Everyone is familiar with an outdoor dial thermometer. On a hot day
the dial is pointing near 90°. And on a cold day the dial has moved,
and is pointing near 30°. What makes the dial move?

It has a thermostatic controller that expands on hot days and contracts
on cold days. Thus, the dial is moved by temperature. And just like the
dial thermometer, The Turbine Boss™ gives you many, many years of
trouble-free service.

2. Is this damper system for use with new or old turbine vents?

Both. It is a 'retrofit' and that means it works with existing vents. And it fits new
ones, too. Most installations will be with older turbines, since there are always many
more of them - than new ones sold.