fˈaɪɚɹ ɐlˈɑːɹm sˈɪstəmz ˈɔfən sˈuːpɚvˌaɪz ˈɪnpʊts ænd ˈaʊtpˌʊts wɪð ɐn ˈɛndʌvlˈaɪn dɪvˈaɪs sˈʌtʃ ɐz ɐ ɹᵻsˈɪstɚ ɔːɹ kəpˈæsɪɾɚ.
Fire Alarm systems often supervise inputs and outputs with an end-of-line device such as a resistor or capacitor.