| 摘要 |
<p>The building burglar alarm system, for protecting various rooms, security drawers, cupboards etc. comprises five different circuits coupled together. These comprise a control circuit, a visual signalisation circuit, an acoustic signalisation circuit, a cable interconnection circuit and a battery function control circuit with a visual display. Pref. the system has an alarm switch (11, 12, 13...) for each separate room of an apartment, each in series with an indicator light (V1, V2, V3 ...). Two output terminals (5, 6) can be coupled to a further monitoring circuit, eg for the complete building. Pref. the system hs a main switch (1G) for bringing it into service and a key switch (1C) connected in parallel.</p> |
