Symbol 1251 from ISO 7000 - Title/Meaning: Dust filter of sweeper 
Function/description: To identify the display that provides information about the dust filter, which removes particulate matter from the air. To identify the dust filter. To indicate the operational status of the dust filter.
Own work using: iso.org/obp/graphics/grs/39dcd96e-1912-4f0b-9674-b33f40f0d823 200.png
Vectorization:  Mrmw