This Tariff Concession Order (TCO 0939751) declares that ducted‑heater controllers (Customs tariff classification 8537.10.90) with resistors and electronic switches are goods to which Part III, Schedule 4 item 50 of the Customs Tariff Act 1995 applies. It takes effect from 22 October 2009 and continues until revoked under ss.269SC or 269SD of the Customs Act 1901 (made under s.269P).
Mechanically, the order changes import treatment for those specific goods by making the Schedule 4 item applicable; importers and customs officers must rely on the 8537.10.90 classification and the recorded effective date. The decision was taken by a delegate of the CEO (Wendy Knowles, dated 8 January 2010).