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Dominant sound freq. [Hz], mid range
Foam dust filter (7 V)
339,028
Hexagonal grille (7 V)
339,028
No obstacle (7 V)
339,028
Plastic dust filter (7 V)
339,028
Circular grille (7 V)
201,587
Nylon dust filter (7 V)
201,587
Value
Value
Power voltage
Obstacle
Ascending
Descending
Ascending
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