Power switch: used to turn the power of the fume hood on and off. It is usually designed with obvious signs, such as "ON" and "OFF", to facilitate the operator to operate.
Wind speed adjustment button: can be divided into "+" and "-" buttons. By pressing the corresponding button, the wind speed of the fume hood can be increased or decreased to meet the ventilation requirements of different experiments.
Lighting switch: controls the opening and closing of the lighting fixtures inside the fume hood to ensure sufficient light when needed to observe the experimental operation.
