1. FAQ The Turbine Boss needs no batteries or electricity That s hard to believe How does it work Consider the outdoor dial thermometer On a hot day the dial is pointing near 90 and on a cold day the dial 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 like the dial thermometer The Turbine Boss gives you many many years of trouble free service