Adjust consumption of heat depending on the ambient temperature. The higher the water temperature is the less energy required by the PTC. At a water temperature of 28 degrees the heater has about 40 degrees, while the energy consumption is situated at only 180W to safe power.
The small design of the control unit will fit through most of the waterbed frame openings. The temperature is easily set by turning the wheel on the controller, the temperature can be set between 1 till 7. There are no degree signs on the controller, your choice will be after comfort, low, medium or high. The temperature range is between 20-36°C.
All power units always create some warmth and are therefore recommended to be kept on the floor or fixed to the wall beside the bed.