SILENT KNIGHT 4821 Manual de Instalação Página 72

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Model 4821/4820 Control/Communicator Installation Manual
4-28 150964
4.17 Speaker Wiring
The 4821/4820 can be used with one external and two internal speaker outputs. In UL installa-
tions, a bell must be the primary source for alarm annunciation in UL burglary installations. In
UL burglary installations speakers can be used as an supplementary source only and are not
intended to be used for evacuation purposes.
4.17.1 Internal Speaker Wiring
Each internal speaker output can accept one 8 ohm, 5 watt speaker or three 45-ohm, 1 watt
speakers in parallel.
Figure 4-17 Internal Speaker Wiring
4.17.2 External Speaker Wiring
The external speaker output can accept one 8 ohm, 15 watt minimum speaker.
Figure 4-18 External Speaker Wiring
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