Vacmaster VSH01 Guía De Uso Y Cuidado página 12

4. To turn the vacuum on, press the on/off switch to the 'I' position.
5. To use the crevice tool, insert one end of the tool into the hand vacuum for
cleaning corners, edges, drawers, etc.
6. Once you have completed vacuuming, press the on/off switch to the 'O'
position and unplug the power cord from the outlet.
On/Off Switch
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I = ON
O = OFF