Electrosurgical units are used in laparoscopic surgery or open surgery to cut as a knife or coagulate bleeding (like welding). Many new technical features are included: parallel use of three instruments, automated adjustments by RFID, full-color touchscreen behind glass, animated adjustments showing the result, illuminated sockets, angled front, sockets angled to the side – display free of cables, easy to clean – no gaps, joints, screws, monopolar and bipolar sockets on the right and the left side – no mix up, ordered backside and more. An ARC+ (Argon) can be used for special surgery with ARC 400.