Main features 1). Digital display of output power, and sound signal given when the minimum or maximum power limit is reached; 2). Two monopolar cutting modes: pure and blend; 3). Two monopolar coagulation modes: fulgurate and spray; 4). One bipolar modes: bipolar coag; 5). Designed with patient plate continuity monitoring circuit, which can effectively prevent electrical burns to patients; 6). Isolated rf output; 7). Output controlled by pencil switch or footswitch; 8). Adjustable output sound volume; 9). Functions expandable: for use in combination with endoscope or argon trolley; 10). Top-quality components and devices employed, and high reliability ensured.