A mains electricity (AC-powered) device designed to generate radio-frequency (RF) electrical current used to create heat 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. The generator connects via a delivery cable to an electrosurgical ablation probe/catheter (not included) to transmit the RF electrical current to the operative site; it may additionally be intended to heat an electrode tip (electrocautery).