HEATTRAK® SNOW & ICE MELTING WALKWAY Power Unit Each set of Industrial Stair Mats comes with one Power Unit to connect the system to an electrical outlet. The Power Unit contains its own Ground Fault Circuit Interrupter and a 6 foot cord. Depending on your application you may need to purchase an additional Power Unit as a separate item. Power Unit Cord Length: 6 feet. Trip level, 30mA.
