1. Insimbi engagqwali
2. Abane bangene noyedwa ngaphandle
3. Kungaxhunywa izinzwa ezifika kwezine
4. Ukubukeka okuhle, okuqinile, ukubekwa uphawu okuhle
5. Nge-potentiometer
Ibhokisi lokuhlangana lensimbi engagqwali eline-potentiometer JB-054S, elingaxhunywa kuzinzwa ezine Ibhokisi lokuhlangana elincane Ngenxa yomehluko wezinto ezibalulekile, ubunzima nomzimba wenzwa kanye nenqubo yokukhiqiza, imingcele yenzwa ngayinye ayihambisani, ikakhulukazi ngoba lokuzwela. Lokhu kungahambisani yilokho okuvame ukubizwa ngokuthi umehluko wama-engeli. Ngenxa yalesi sizathu, igama le-junction box lihilelekile, okungukuthi, isignali yokuphuma kwenzwa ixhunywe ebhokisini lokuhlangana kuqala, bese ithunyelwa ensimbi, elungiswa ngokulungisa i-potentiometer ngaphakathi kwebhokisi lokuhlangana. Umehluko we-engeli, ukuze ukuzwela kwenzwa ngayinye kusondele okufanayo, ukuze kuqinisekiswe ibhalansi yawo wonke umzimba wesikali.