Generac,18/17 kW Air-Cooled Standby Generator, Alum Enclosure, 200 amp SE (not CUL). Every Guardian Series generator comes with FREE Mobile Link Connectivity, allowing you to monitor the status of your generator on a phone, tablet or computer from anywhere in the world. Connected to your existing LP or natural gas fuel supply, the generator starts within seconds of sensing power loss - automatically - and runs for as long as necessary until utility power returns. Choose from just enough power to cover essential circuits or whole house coverage. Generac's Guardian Series offers benefits that few competitors can match, all backed by 24/7/365 customer support and a nationwide dealer network.