An assembly of devices designed to generate and apply radio-frequency (RF) electrical current for heating via an electrode(s) in a precise location, at a controlled temperature, for focal ablation of non-cardiac tissues, including nerves, tumours, precancerous tissue; it may be intended for coagulation however it is not intended for electrosurgical cutting. It typically includes a mains electricity (AC-powered) RF current generator, controls, cables, and an appropriate electrosurgical ablation probe, catheter, and/or handpiece with electrode(s).