● DSTB, pamaziko a DST / DSY lakuthwa, resistors amatha kukhala ndi chipangizo chowongolera kutentha, chifukwa cha chitetezo, kukongola komanso kusavuta, timalimbikitsa kuti apangidwe ngati banki yonyamula katundu, yomwe imatha kuzindikira kuyika kutentha. zimakupiza dissipation, kuteteza kutentha kutentha, overcurrent ndi overvoltage chitetezo, chipangizo alamu, multifunctional digito anasonyeza (digito kusonyeza mphamvu, kukana, panopa, voteji, pafupipafupi, etc.) ndi unit limodzi ndi AC ndi DC ntchito ziwiri zolinga.
● Mafani,zida,zida zodzitchinjiriza,zipangizo zamaalamu,etc.zitha kupezeka,mafani nthawi zambiri amayikidwa pansi kapena akhoza kuikidwa m'mbali;
● Magawo awiri kapena atatu amatha kukhala osinthika, gawo limodzi la AC / DC cholinga chapawiri, amatha kuwonetsa mphamvu, kukana,pano, magetsi, pafupipafupi, etc.