I-module yesekondari yesikhala (esihlangene, esiqondile) ixhunywa nge-connector eyi-rectangular, okwenza ukuthi ukulawulwa komjikelezo wokusebenza, ugesi, kanye nezilinganiso zokudlulisela kusuka kumishini yesikhala sokuqala kuye ku-DTU, futhi ingakwazi ukusebenza njengemodyuli yesikhala yokungena/ukuphuma kwe-ring network cabinet ehlangene phakathi kwe-primary ne-secondary, enomsebenzi wokuhambisa amandla.

Ngo-Mashi 2025, kuye kwathunyelwa izimbazo ezingaphezu kuka-200,000 zale module.