Radiofrequency energy is closely monitored with a central unit. The energy is either pulsed in the transcutaneous mode or continuous in the endovenous and hemorrhoid mode. The settings are easily adjusted by the touchscreen. An increase or decrease of the energy and pulses by a simple touch of the screen bars allows practitioners to work in detail without the unnecessary destruction of surrounding tissue and resulting in an effective thermocoagulation and closing of the vein.