The Nordic Fast-Stat Model 7000 Control is an essential kit designed to extend wiring between a heat pump, indoor unit, and thermostat, providing seamless functionality for both single and two-stage heat pump systems. This three-part kit operates efficiently over a 2-wire condenser cable and a 4-wire thermostat cable, simplifying installation and enhancing system performance. Additionally, it features built-in optional fossil fuel/supplemental heat control, ensuring comprehensive management of heating systems for maximum comfort and efficiency. With the Model 7000, homeowners can enjoy reliable operation and customizable control over their HVAC systems.