Bangaren watsawabakin kofar garejigabaɗaya ya kasu kashi biyu, wato, remote control(kofar garage)da kuma tsarin watsawa. Mai sarrafa ramut da na'urar sarrafa ramut don yanayin amfani ne. Ana iya amfani da na'ura mai nisa da kansa a matsayin cikakkiyar na'ura, kuma layin da ke fita waje yana da shugaban tari; Ana amfani da tsarin sarrafa nesa a matsayin wani abu a cikin kewaye kuma ana amfani dashi gwargwadon ma'anar fil ɗinsa. Amfanin yin amfani da tsarin kula da nesa shine cewa za'a iya haɗa shi da sauri tare da tsarin aikace-aikacen, ƙananan ƙara, ƙananan farashi da yin amfani da komai mafi kyau. Koyaya, dole ne mai amfani ya fahimci ƙa'idar kewayawa da gaske. In ba haka ba, ya dace don amfani da ramut.

Gabaɗaya magana, ɓangaren karɓa nabakin kofar garejikuma ya kasu kashi biyu, watosuper heterodyne gareji kofa remoteda yanayin karɓuwa na haɓakawakofar gareji nesa. Super regenerative demodulation circuit kuma ana kiransa super regenerative detection circuit. A zahiri, da'irar ganowa ce ta sake haɓaka aiki a cikin yanayin oscillation na tsaka-tsaki. Superheterodyne demodulation circuit iri daya ne da rediyon superheterodyne. An sanye shi da kewayen oscillation na gida don samar da siginar girgiza. Bayan haɗawa da siginar mitar mai ɗaukar kaya, ana samun siginar matsakaici (gaba ɗaya 465kHZ). Bayan haɓakawa na tsaka-tsaki da ganowa, ana lalata siginar bayanai. Saboda mitar mai ɗaukar hoto tana da ƙayyadaddun ƙayyadaddun ƙayyadaddun bayanai, kewayensa ya fi na rediyo sauƙi. Mai karɓar superheterodyne yana da fa'idodin kwanciyar hankali, babban hankali da ingantaccen ikon tsangwama; Super regenerative mai karɓa karami ne kuma arha. Sauƙi don warwarewa.