DVC DF7, DF7-W 2 Wire Intercom System User Manual
Ithute ka DF7 le DF7-W 2 Wire Intercom System ka bukana ena e felletseng ea mosebelisi. Fumana likarolo, litaelo tsa ho kenya, le Lipotso tsa lipotso bakeng sa sistimi ena e tsoetseng pele ea li-intercom.