G.A.S Enviro 4 ControllerG. A. S ENVIRO 4 CONTROLLER The Envrio4 controller, created by Global Air Supplies, offers full control over your environment, enabling you to enhance your grow. It can manage EC fan speeds and set 'on' and 'off' times for almost any equipment in your grow room through its four programmable sockets. This streamlines your setup, simplifying the control of your grow room and maintaining an optimal environment from one singular point. The Enviro4 is a