Parking heater with 4 kW heat output especially suitable for continuous/night operation in motorhomes. Optimal power spectrum (900-4000 watts) allows a pleasant, constant temperature ratio. New: Operation up to 3000 m through integrated altitude adjustment. Very quiet and constant night operation without constant switching on and off of the heating by infinitely variable heat output control with the lowest setting of 950 W. In addition, the new metering pump has been optimized - a "ticking" during fuel withdrawal is now a thing of the past. Very low power consumption (6-42 watts). Suitable for larger camper vans/camping buses or as additional heating for winter campers.