This Tariff Concession Order declares that a specified class of containerised power modules (listing lighting, flooring, transfer switch with closed transition transfer, power distribution board, switchgear, cable management, UPS, AC/DC air‑conditioning, fire extinguishing system and surge suppression) are goods to which Part III, Schedule 4 item 50 of the Customs Tariff Act 1995 applies. It takes effect from 25 October 2011 and continues until revoked. Who it affects: importers of those containerised power modules and customs officers deciding tariff classification; why it matters: it fixes which Schedule 4 tariff item applies and so determines the tariff treatment and related compliance obligations.