This system able to attract swiftlets and pooling birds at the rooftop of the swiftlet house.
The purpose of the hexagonal speaker is to call birds within 1 km radius area to come over to the swiftlet house roving yard.
Thus, the leading sound at the entry hole will guide birds into the house.

 Swiftlet Attraction and Pooling Sound System - USD503.00

  (The above price include shipping charge  within Malaysia Only.)