For the actuation of high frequency surgery devices, foot-operated control devices are applied. The requirements for these control devices are prescribed in EN 60601-1, as well as in EN 60601-2-2. Foot controls for this application field are characterised by defined requirements for the protection class, as well as mechanical stability. Electrostatic charging must be avoided. The requirements for class AP (anaesthesia approved) might also be relevant. In this case the foot controls are gas-proof encapsulated (zone M). The main actuating elements are a yellow pedal (activation »cutting«) and a blue pedal (activation »coagulating«). HF surgery permits much gentler interventions in many areas.