SILENT KNIGHT 4821 Manual de instalación Pagina 74

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Model 4821/4820 Control/Communicator Installation Manual
4-30 150964
4.18.2 Commercial Bell Wiring
A bell can be attached to the built-in relay on the 4821/4820 and is factory-programmed for
this purpose. If you are installing a UL commercial burglary system, you must use an Ademco
AB12 Bell and Box bell and enclosure. Wire as shown in Figure 4-20.
Figure 4-20 Commercial Bell Wiring
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