TDS e sebetsa ka ho khetheha lisebelisoa tse hlokahalang ho fihla sebakeng sa mofuta ofe kapa ofe ho cheka metsi a hau hantle.TDS e inehetse ho nts'etsopele ea litsebi tsa liboro tsa DTH le lisebelisoa tsa ho phunyale thekiso le tlhokomelo ea li-compressor tsa moea.Letoto lena la lihlahisoa le na lelitšoaneleho tsa kabo e tloaelehileng, sebopeho se kopaneng le se utloahalang, ho cheka ka potlakolebelo, moruo le durability, tlaase sekgahla sa ho hloleha, joalo-joalo E se e sebelisoa haholo ka likete tsekaho ea boenjiniere ba merafo, ho cheka baahi, ho cheka ka mocheso oa mocheso le likarolo tse ling.