This Tariff Concession Order (0813445) declares that an imported inline check‑weigher combined with a metal detector (tariff classification 8479.89.90) is covered by item 50 of Part III, Schedule 4 to the Customs Tariff Act 1995, effective 18 June 2008 (made under s.269P, Customs Act 1901).
Mechanically, importers of that specified system can claim the Schedule 4 tariff treatment (reducing or removing customs duty); the decision was made by a delegate of the CEO and may be revoked under ss.269SC–269SD. Importers must satisfy the product description to rely on the concession.