G.A.S - EC2 Thermostatic Fan Speed Controller with BalancerTake Control of Your Environment with the GAS EC2 Thermostatic Fan Speed Controller and Balancer Create the perfect environment with this small but powerful EC controller with built in fan balancer. The EC2 regulates maximum and minimum fan speeds for your intake and outtake and keeps room temps at optimal levels. How the GAS EC2 Thermostatic Speed Controller Works: Controlling your fan speed is critical. When cold outdoor temperatures hit, its handy