The Vevor self-regulating heating cable is designed to help protect roofs, gutters, downspouts, and pipes from freezing and ice dam buildup during winter. Its self-regulating technology automatically adjusts heat output based on ambient temperature to improve efficiency and help prevent overheating. The 30' cable delivers rapid heating performance and features durable, waterproof construction for dependable outdoor use. Its pre-assembled design supports spiral, cross-wrap, or straight-line installation on a variety of roofing materials. A 6' power cord is included for convenient setup.