Phunzirani momwe mungayikitsire ndikugwiritsa ntchito STS-K020 Window Intercom System yokhala ndi kalozera wa ogwiritsa ntchito a Contacta. Dongosolo la retrofitli ndilabwino kwa malo monga mabanki ndi ma positi ofesi, ndipo limaphatikizapo zowulutsira mawu kwa ovala zida zomvera. Zigawo za zidazi zimakhala ndi mabatani a maikolofoni oyesedwa bwino ndi ma speaker apamwamba, okhala ndi malangizo oyika ndi zida zovomerezeka zoperekedwa.
Phunzirani kukhazikitsa ndi kugwiritsa ntchito Contacta STS-K071 Two Way Window Intercom System ndi bukhuli. Mulinso zambiri pazigawo za sipika ndi maikolofoni, zolumikizira, ndi malangizo oyika. Malo opangira kumvetsera alipo. Zokwanira pakulankhulana momveka bwino kudzera mu galasi kapena zowonetsera zotetezera.
Phunzirani momwe mungayikitsire Contacta STS-K071 Window Intercom System ndi bukhuli. Dongosololi limaphatikizapo cholankhulira, maikolofoni ya mbewa, pod ya antchito, ndi malo omvera omvera. Zida zolangizidwa ndi malangizo atsatane-tsatane akuphatikizidwa. Limbikitsani kulankhulana pogwiritsa ntchito zotchinga zamagalasi.