The Chauvet FC-W Wireless Remote Fog Machine Controller is designed to activate up to four Chauvet fog machines independently (separate receivers for additional foggers are required). The FC-W sports two LED indicators that display whether a machine is ready or heating, so you'll never be at a loss as to which fog machines are ready to be deployed. And with an operating range of 100 feet, you can rig up sizable venues. Control you fog like a pro, with the Chauvet FC-W Wireless Remote Fog Machine Controller!