Dust extractor having an electric outlet connectable to a power tool

A dust extractor, comprising:

• a motor and a fan to generate an air flow,
• a dust separator to separate dust particles from the air flow,
• an electric outlet connectable to a power tool,
• a control system,
• a user interface, and
• a current measuring unit to measure electric current of the outlet,
• wherein the control system is arranged to:
• measure a first representative current value of the electric outlet by using the current measuring unit,
• associate the first representative current value with a first state of the power tool when a user confirms by providing a first user input via the user interface that the power tool is operating in the first state,
• determine a first threshold value from the first representative current value associated with the first state of the power tool,
• measure the electric current of the outlet,
• compare the measured electric current with the first threshold value, and
• control an air flow of the dust extractor based on a result of said comparison,
• wherein the control system is arranged to provide a first prompt to the user via the user interface so as to indicate that the control system is ready to receive the first user input.