Need to replace or upgrade the controller for your vehicle's parking heater? This universal knob-style controller works with both 12V and 24V DC systems, making it compatible with many cars, trucks, vans, and RVs. It lets you manually set the temperature and timing – super handy for preheating your cabin on cold mornings without running the main engine. It has a user-friendly design with a knob for quick adjustments, supports timer start/stop functions, and even includes a manual fuel priming mode. Some models may allow remote control pairing (check specifics). It's built from quality materials for reliability. Installation is usually straightforward, but always double-check wiring compatibility with your specific heater model. A solid, affordable replacement part to keep your auxiliary heating system running smoothly.